A study found that mice exposed to light at night gained substantially more weight than mice who had complete darkness at night. What is the effect of light at night on weight gain? In the study, 27 mice were randomly divided into two groups.) and we examine the effect after 8 weeks. The 8 mice with darkness at night gained an average of 5.9 grams in body mass, with a standard deviation of 1.9 grams. The 19 mice with light at night gained an average of 9.4 grams with a standard deviation break of 3.2 grams. there is no extreme skewness or extreme outliers, so it is appropriate to use a t-distribution. Find and interpret a 99% confidence interval for the difference in mean weight gain. Use the prebuilt StatKey Randomization Test for Differences in Means data set: Mice Wgt Gain-2e to complete the questions below a. Identify the variable of interest – be specifie. b. Calculate the statistic for this sample. c. Use correct Statkey template to caleulate a 90% confidence interval for the difference of mean weight gain between the Dark treatment group and the Light treatment group Then show that resulting interval. Use3 decimal places. d. Interpret the results of your confidence interval in the context of the problem. e. Many other studies have found that the mean weight gain for mice assigned to a treatment of dark at night is different than the mean weight gain of the mice assigned to the light treatment t group. Is this true for the mice studied in the study presented in Question 8. Is there a difference in mean weight gain between the different treatment groups? Determine and state the appropriate hypotheses. f. Complete all steps of the hypothesis tes. Use Statkey to report the value of the test statistic and the p- value. Then formulate a conclusion from the results of your hypothesis test in context of the problem.
A study found that mice exposed to light at night gained substantially more weight than mice who had complete darkness at night. What is the effect of light at night on weight gain? In the study, 27 mice were randomly divided into two groups.) and we examine the effect after 8 weeks. The 8 mice with darkness at night gained an average of 5.9 grams in body mass, with a standard deviation of 1.9 grams. The 19 mice with light at night gained an average of 9.4 grams with a standard deviation break of 3.2 grams. there is no extreme skewness or extreme outliers, so it is appropriate to use a t-distribution. Find and interpret a 99% confidence interval for the difference in mean weight gain. Use the prebuilt StatKey Randomization Test for Differences in Means data set: Mice Wgt Gain-2e to complete the questions below a. Identify the variable of interest – be specifie. b. Calculate the statistic for this sample. c. Use correct Statkey template to caleulate a 90% confidence interval for the difference of mean weight gain between the Dark treatment group and the Light treatment group Then show that resulting interval. Use3 decimal places. d. Interpret the results of your confidence interval in the context of the problem. e. Many other studies have found that the mean weight gain for mice assigned to a treatment of dark at night is different than the mean weight gain of the mice assigned to the light treatment t group. Is this true for the mice studied in the study presented in Question 8. Is there a difference in mean weight gain between the different treatment groups? Determine and state the appropriate hypotheses. f. Complete all steps of the hypothesis tes. Use Statkey to report the value of the test statistic and the p- value. Then formulate a conclusion from the results of your hypothesis test in context of the problem.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A study found that mice exposed to light at night gained substantially more weight than mice who had
complete darkness at night. What is the effect of light at night on weight gain? In the study, 27 mice were
randomly divided into two groups.) and we examine the effect after 8 weeks. The 8 mice with darkness at
night gained an average of 5.9 grams in body mass, with a standard deviation of 1.9 grams. The 19 mice
with light at night gained an average of 9.4 grams with a standard deviation break of 3.2 grams. there is no
extreme skewness or extreme outliers, so it is appropriate to use a t-distribution. Find and interpret a 99%
confidence interval for the difference in mean weight gain. Use the prebuilt StatKey Randomization
Test for Differences in Means data set: Mice Wgt Gain-2e to complete the questions below
a. Identify the variable of interest – be specific.
b. Calculate the statistic for this sample.
c. Use correct Statkey template to calculate a 90% confidence interval for the difference of mean weight
gain between the Dark treatment group and the Light treatment group Then show that resulting interval.
Use 3 decimal places.
d. Interpret the results of your confidence interval in the context of the problem.
e. Many other studies have found that the mean weight gain for mice assigned to a treatment of dark at night
is different than the mean weight gain of the mice assigned to the light treatment t group. Is this true for
the mice studied in the study presented in Question 8. Is there a difference in mean weight gain between
the different treatment groups? Determine and state the appropriate hypotheses.
f. Complete all steps of the hypothesis tes. Use Statkey to report the value of the test statistic and the p-
value. Then formulate a conelusion from the results of your hypothesis test in context of the problem.
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