A permutation test assumes that the observed data is normally distributed. Select one: O a. True O b. False
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Q: The average fruit fly will lay 375 eggs into rotting fruit. A biologist wants to see if the average…
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![A permutation test assumes that the observed data is normally distributed.
Select one:
O a. True
O b. False](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F04d63e14-5a68-427f-a0a5-cc6f75b86041%2F3a1852e5-4d3d-46cf-b8c7-cd90d7ddf969%2Fblgpsyg_processed.png&w=3840&q=75)
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- A factory owner has taken a sample (n = 20) of workers to see how many broken widgets each employee produces per day. For the following data, construct a frequency distribution table. Include columns for observed value (Xcat), frequency, proportion, and percent. 2 1 0 2 1 0 7 3 8 0 1 5 0 0 9 2 0 1 3 0Cholesterol level data (in mg/dL) were collected on patients four days after having a heart attack. The data are in the table below. Determine if the data are from a population that is normally distributed. 142 160 186 206 210 220 224 226 236 242 244 266 270 272 276 278 294 310 318 360The average fruit fly will lay 375 eggs into rotting fruit. A biologist wants to see if the average will be greater for flies that have a certain gene modified. The data below shows the number of eggs that were laid into rotting fruit by several fruit flies that had this gene modified. Assume that the distribution of the population is normal. 379, 406, 378, 394, 369, 369, 402, 383, 367, 357, 401, 407, 357, 394, 367 What can be concluded at the the a = 0.05 level of significance level of significance? a. For this study, we should use t-test for a population mean b. The null and alternative hypotheses would be: Ho: H1: C. The test statistic (please show your answer to 3 decimal places.) d. The p-value (Please show your answer %D to 4 decimal places.)
- A biologist needs to estimate the weight of all spiny lobsters on the Treasure Coast. To achieve this, the biologist collects a random sample of 20 spiny lobsters. The weights of each lobster in the sample are given below. Assume that the weights of all spiny lobsters on the Treasure Coast are normally distributed. 9.7 7.1 8.2 6.3 8.1 5.5 7.8 7.8 9.2 8.8 7.7 8.8 9.7 6.6 6.3 8.9 7 8.1 9 8.2 Determine the point estimate, ¯xx¯ and the sample standard deviation, ss. Round the solutions to four decimal places, if necessary.¯x=x¯=s=s=Using a 99% confidence level, determine the margin of error, EE, and a confidence interval for the average weight of a spiny lobster on the Treasure Coast. Report the confidence interval using interval notation. Round solutions to two decimal places, if necessary.The margin of error is given by E=E=.A 99% confidence interval is given by .A boat capsized and sank in a lake. Based on an assumption of a mean weight of 142 lb, the boat was rated to carry 60 passengers (so the load limit was 8,520 lb). After the boat sank, the assumed mean weight for similar boats was changed from 142 lb to 171 lb. Complete parts a and b below. a. Assume that a similar boat is loaded with 60 passengers, and assume that the weights of people are normally distributed with a mean of 178.5 lb and a standard deviation of 36.9 lb. Find the probability that the boat is overloaded because the 60 passengers have a mean weight greater than 142 lb. The probability is 1.000. (Round to four decimal places as needed.) C.. b. The boat was later rated to carry only 13 passengers, and the load limit was changed to 2,223 lb. Find the probability that the boat is overloaded because the mean weight of the passengers is greater than 171 (so that their total weight is greater than the maximum capacity of 2,223 lb). The probability is. (Round to four decimal…A group of students were asked how many times they exercised in the past week. The results were: 0,0,0,0,0,1,1,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,4,5,6,7,7,7. a. Construct a histogram summarizing the data. Use [0,2), [2,4), etc. as the bins b. Describe the shape and the modality of the histogram.
- A boat capsized and sank in a lake. Based on an assumption of a mean weight of 135 lb, the boat was rated to carry 70 passengers (so the load limit was 9,450 Ib). After the boat sank, the assumed mean weight for similar boats was changed from 135 lb to 175 lb. Complete parts a and b below. a. Assume that similar boat is loaded with 70 passengers, and assume that the weights of people are normally distributed with a mean of 181.9 Ib and a standard deviation of 35.1 Ib. Find the probability that the boat is overloaded because the 70 passengers have a mean weight greater than 135 Ib. The probability is (Round to four decimal places as needed.) b. The boat was later rated to carry only 13 passengers, and the load limit was changed to 2,275 lb. Find the probability that the boat is overloaded because the mean weight of the passengers is greater than 175 (so that their total weight is greater than the maximum capacity of 2,275 Ib). The probability is. (Round to four decimal places as…A city wants to know if a new advertising campaign to make citizens aware of the dangers of driving after drinking has been effective. The accompanying table shows the number of drivers who have been stopped with more alcohol in their systems than the law allows for each day of the week in the week before and the week a month after the campaign starts. Assume that the data from each population is Normally distributed. Complete parts a through i below. A. Are the data paired? Explain. B. Compute the mean difference C. Compute the standard deviation of the differences. D. Compute the standard error of the mean difference. E. Find the value of the t-statistic. F. How many degrees of freedom does the t-statistic have? G. Is the alternative one- or two-sided? Explain. H. What is the P-value associated with this t-statistic? Assume that the other assumptions and conditions for inference are met.A sample of 10 observations taken from a normally distributed population yielded the following data.46 54 30 48 46 39 47 36 41 56
- A student is interested in whether students who study with music playing devote as much attention to their studies as do students who study under quiet conditions. He randomly assigns participants to either the music or no-music condition and has them read and study the same passage of information for the same amount of time. Participants are then all given the same 10-item test on the material. Their scores appear below. Scores on the test represent interval-ratio data and are normally distributed. music no-music 6 10 5 9 6 7 5 7 6 6 6 6 7 8 8 6 5 9 Please use the appropriate statistical test to analyze these data, and design a hypothesis testing process, get the conclusion about whether students who study with music playing devote as much attention to their studies as do students who study under quiet conditions. If significant, compute the effect size, interpret this, and draw a graph representing the data.If a distribution is negatively skewed, in what order (from lowest to highest) will the averages be? Select one: a. mean, median, mode b. mode, median, mean c. median, mode, mean d. mean, mode, medianThe table below shows the scores of a group of students on a 10-point quiz. Frequency Test Score 3 4 5 6 7 8 9 10 2 3 0 3 3 3 4 4 The mean score on this test is: The median score on this test is:
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