EBK BUSINESS STATISTICS
8th Edition
ISBN: 9780135179833
Author: STEPHAN
Publisher: VST
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- (a) Suppose I have a bag with 4 marbles. One is red and 3 are green. Pick one marble, note the color and then put it back and pick a second marble. Find P(Both Red) = Explain your reasoning. P(Both Green) = %3D %3Darrow_forwardHand written please. An investigator wants to assess the association between manganese and blood pressure in pregnant women (side note: this is a study I am currently working on). The study plans to enroll 100 pregnant women. During the third trimester, each participant will have their manganese level and systolic blood pressure measured. Identify the type of study design and briefly describe its strengths and weaknesses.arrow_forwardA researcher is interested in determining if sleeping more hours the night before an exam will improve student math practice test scores. She randomly divides the class into two groups. One group is instructed to sleep 9 hours. The other group is instructed to sleep 6 hours. Students were asked to complete a practice math test the following day. The researcher then compares the average test score of each group. What is the DV? O the class O the researcher average test score O sleep (9 hours vs 7 hours)arrow_forward
- Stephanie is trying to figure out the sample size of an experiment. She knows the population SD is 41.5 and the SD of the sample averages is 2.7. What is the sample size of the experiment?arrow_forwardYou take a sample of n = 50 rats and you put them in three different cages: On day 1, they are in a cage that is in a room with a 65-degree temperature. On day 2, they are in a cage with a 70-degree temperature. On day 3, they are in a cage with a 75-degree temperature. On each day you measure how many minutes of each hour they spend running on their exercise wheel. To compare the time they spent running on the wheel between the three different days (in other words, between the three different temperatures of 65, 70, and 75 degrees), what kind of hypothesis test should you do? One-Factor, Independent-Measures ANOVA One-Factor, Repeated-Measures ANOVA Correlation/Regression Chi-Square Goodness of Fitarrow_forwardPlease help me with this question. Answer all parts pleasearrow_forward
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