Math

StatisticsQ&A Libraryc. One can be 9570 Commuo limit. D. a and b 2. The following data were collected in a clinical trial evaluating a new compound designed to improve wound healing in trauma patients. The new compound is compared against a placeb0. After treatment for 5 days with the new compound or placebo the extent of wound healing is measured and the data are shown below. Percent Wound Healing Treatment New Compound (n-125) Placebo (n-125) 0-25% 15 36 26.50% | 51-75% | 76-100% 32 37 45 34 Is there a difference in the extent of wound healing by treatment? Hint: Are treatment and the percent wound healing independent?) Run the appropriate test at a 5% level ofsignificance. df- alpha 5 2 17 ) Reject Ho ifX2 Compute expected frequencies Expected Frequency (Row Total * Column Total)/N. Complete the expected frequencies for each cell. Percent Wound Healing Total 125 125 250 Treatment 0-25% | 26-50% 51-75% 32 76-100% 41 New Compound Placebo Total 15 36 51 37 45 82 34 10 Compute χ2. (27.2) 28.32 Based on comparing the computed χ2 to the rejection level χ2 which of the following is (are) true? We have statistically significant evidence at alpha-0.05 to show that Ho is false. A. B. Treatment and percent wound healing are not independent. C. Treatment and percent wound healing are independent. D. a and b. Page 2 of 3Start your trial now! First week only $4.99!*arrow_forward*

Question

Can you help me complete the bottom chart and compute X2 of my homework assignment? I know df is 125-1=124. Thank you.

1 Rating

Tagged in

Math

Statistics

Find answers to questions asked by students like you.

Q: A random sample of 30 binomial trials resulted in 12 success. Test the claim that the population por...

A: Hi, since the problem posted by you contains multiple sub-parts, we are answering the first three s...

Q: Five children aged 2, 3, 5, 7 and 8 years old weigh 14, 20, 32, 42 and 44 kilograms respectively. Fi...

A: Let x be the age of children and y be the weight of children.The equation of the regression line is:

Q: A hospital reported that the normal death rate for patients with extensive burns (more than 40% of s...

A: The provided information are:

Q: Use software or a calculator to find the range, variance, and standard deviation of the following b...

A: As data of temperature is not provided here. Here i can show you how to find the range, standard dev...

Q: This study investigated the cognitive effects of stimulant medication in children with Attention-Def...

A: Solution:The appropriate statistical analysis to determine if there is an effect of drug dose on CPT...

Q: A population has a mean of 15 and standard deviation of 3. Round the answers to two decimal places a...

A: Let X be the observation. X follows normal distribution with mean μ = 15 and the standard deviation ...

Q: The number of unhealthy days based on the AQI ( Air Quality Index) for a random sample of metropolit...

A: Confidence interval:The (1-α) % confidence interval for population mean µ, when σ is unknown is give...

Q: In a recent survey conducted by the International Nanny Association, 4,176 nannies were placed in a ...

A: Yes, it is appropriate to divide 24 by 4,176.

Q: . For two factors-starchy or sugary, and green base leaf or white base leaf-the following counts for...

A: Introduction:Denote X1, X2, X3 and X4 as the counts for the progeny of self-fertilized heterozygotes...

Q: Conduct a test at the alphaα=0.10 level of significance by determining (a) the null and alternative...

A: a.Hypotheses:Here p1 and p2 be the two proportions. The aim is to check whether p1>p2. The null a...

Q: Exam grades: scores on a statistics final in a large class were normally distributed with a mean of ...

A: Let X be the scores on statistics final, which is normally distributed with mean = 75 and standard d...

Q: Which variable is most likely to be an independent variable? reading test score stress level runnin...

A: An independent variable is one whose variation does not depend on any other variable and it is under...

Q: The Orchard Cafe has found that about 10% of the diners who make reservations don't show up. If 86 r...

A: Binomial distribution:A random variable X follows binomial distribution if it follows the given prop...

Q: A medical researcher wants to construct a 95% confidence interval for the proportion of knee replace...

A: Sample size:The minimum sample size for a desired confidence level, α with a given margin of error, ...

Q: In a survey of 6000 women, 3431 say they change their nail polish once a week. Construct a 99% confi...

A: Confidence interval:The (1-α) % confidence interval for proportion p is given by,

Q: Given a standardized normal distrubtion (with a mean of 0 and a standard deviation of 1, as in Table...

A: Standard normal distribution:The standard normal distribution is a special case of normal distributi...

Q: You are given the sample mean and the population standard deviation. Use this information to constru...

A: Confidence interval:The formula of confidence interval for the population mean when population stand...

Q: Let A and B be two events with P(A) = 0.71 and P(B) = 0.44. What is the smallest possible value of P...

A: According to the given question, A and B be two events with probability P(A)=0.71 and P(B)=0.44 the...

Q: 10) Two cards are drawn from a standard deck of 52 cards and the first is not replaced before the se...

A: In this question, we have to draw two cards from a deck of 52 cards without replacement. Then we hav...

Q: Jobs and productivity! How do retail stores rate? One way to answer this question is to examine annu...

A: (a)Using the provided data, the sample mean can be calculated using Excel function “AVERAGE()”.Enter...

Q: Statistics Question

A: According to the provided information, the variable ‘x’ be age of the best actress winner and ‘y’ be...

Q: Assume that a populatio of thousands of people whose responses were used to develop the anxiety test...

A: Hey, since there multiple subparts posted, we will answer first three subparts. If you want any spec...

Q: Suppose that you want to do statitical significance tests for fourcorrelations and you want your EWa...

A: According to the provided information, it is required to conduct statistical tests for four correlat...

Q: In Spetember of 2013, Mario The Baker introduced a new chocolate cake and hired Doug and Jeremy to b...

A: Description of events A and B:It is given that 40% of the cakes got “thumbs up” out of 70% of the ca...

Q: Guys, parts (b) and (c) in this solution that you have sent me twice is incorrect https://www.bartle...

A: X data transfer time, is gamma distribution with mean 37.5 and standard deviation 21.6. So, The valu...

Q: If the probability for an event E is P(E)=0.4, then what are the odds against E?

A: Odds against an event:The odds against an event is given by the ratio of the probability of the even...

Q: An economist is studying the job market in Denver area neighborhoods. Let x represent the total numb...

A: Scatter PlotIt is a Graph between two variables. It is plotted to check the relationship between the...

Q: Use this for 11-12: A student club consists of 10 girls and 10 guys. A committee of 8 is to be selec...

A: Combination Rule:A combination is a selection of all or part of a set of objects, without regard to ...

Q: Is the magnitude of an earthquake related to the depth below the surface at which the quake occurs? ...

A: (a) Scatter diagram of the data:The line that best fits the data is least-squares regression line.Th...

Q: For frecuency distribution for us governor 2019. Party. Frequency Democratic. ...

A: For any event A, the probability of A can be found as follows:

Q: Question b

A: B)The variables whose level are set by the experimenter is called as the factor of an experiment. It...

Q: Let A and B be two events with P(A) = 0.71 and P(B) = 0.44. What is the largest possible value of P(...

A: In this question, we have the value of P(A) = 0.71 and P(B) = 0.44 and we have to find the maximum v...

Q: Deborah wants to estimate the percentage of people who eat fast food at least once per week. She wan...

A: Margin of error is usually computed using the formula below. In this question, Margin of error is k...

Q: The body temperatures of a group of healthy adults have a bell-shaped distribution with a mean of 98...

A: According to the empirical rule, in the standard normal curve, approximately 68% of the area is with...

Q: The Nero Match Company sells matchboxes that are supposed to have an average of 40 matches per box, ...

A: It is given that the match boxes are supposed to have an average of 40 matches per box with σ = 7. A...

Q: Gentle Ben is a Morgan horse at a Colorado dude ranch. Over the past 8 weeks, a veterinarian took th...

A: Given data of glucose reading for 8 weeks92 87 82 107 99 109 85 89The sample x-bar is 93.8 . x is no...

Q: Suppose that in a random selection of 100 colored candies, 21% of them are blue. The candy company c...

A: State the appropriate hypothesis:Let p be the population proportion of blue candies.A candy company ...

Q: (a) In the random number table, assign the digits 0 through 8 to the event "successful surgery" and ...

A: Total number of digits assigned to event "successful surgery" (0-8) = 9Total number of digits assign...

Q: Question attached. Can the proof be shown by contradiction? Any help would be appreciated.

A: You've guessed correctly. This can be proved by contradiction as you'll see in the ensuing steps.

Q: Using the data below, determine whether the proportion for each group is equal using a 5% significan...

A: According to the given question, to test whether the proportion for each group is equal using a 5% l...

Q: Use the table below to find the percentage of data items in a normal distribution that lie a. below ...

A: Solution:Percentile reports the percentage of data items in a normal distribution that lies below th...

Q: entle Ben is a Morgan horse at a Colorado dude ranch. Over the past 8 weeks, a veterinarian took the...

A: (a) Level of significance:Level of significance (α) indicates the probability of rejecting null hyp...

Q: 2. You are at Disney World and wait 45 minutes to ride the roller coaster at Space Mountain. Guests ...

A: The aim is to define the cycle time of the process and the throughput time.

Q: Statistics Question

A: Solution:Computation of equation of the regression line:Step-by-step EXCEL procedure to find the equ...

Q: Nearly one half of americans aged 25 to 29 are unmarried. How large a sample is necessary to estima...

A: The formula for the sample size is as follows:

Q: A normal distribution has a mean of 10 and a standard deviation of 10. What is the number such that ...

A: The given information is that the scores distributed normally with mean 10 and variance is 49. The s...

Q: See the attached question.

A: Introduction to binomial distribution:Consider a random experiment involving n independent trials, s...

Q: How would I construct a stem and leaf plot using these numbers 57 54 52 55 51 56 61 68 56 55 54 61 5...

A: Introduction:The numbers here are all two-digit numbers. So, you can consider the digit in the ten’s...

Q: A cell phone manufacturer claims that the average battery life of its newest flagship smartphone is ...

A: Given Null Hypothesis Ho : µ = 20Alternative Hypothesis Ha : µ < 20Sample size n = 3Sample mean =...

Q: The numbers of faculty at 32 randomly selected state-controlled colleges and universities with enrol...

A: Confidence interval:The (1-α) % confidence interval for population mean µ, when σ is known is given ...