k. Use the graph below to investigate the correlation between the two variables.
ID: 3352321 • Letter: K
Question
k. Use the graph below to investigate the correlation between the two variables. Please justify your answer Correlation Study of Kit Kats and Course Load r=-0.14 P = 0.45 Number of Kit Kats Consumed Daily I. If the 90% confidence interval limits for the population mean are 70 and 80, which of the following could be the 95% confidence interval limits? Please justify your answer. A. 72 and 78 B. 65 and 75 C. 65 and 85 D. 72 and 85 m. A TV ad claims that a certain brand of tire has an average lifetime of 60,000 miles. Suppose you plan to test this claim A. B. C. D. by taking a sample of tires and put them to test. The correct set of hypotheses to set up is Ho:= 60,000 and HA:> 60,000 Ho: 60,000 Ho: = 60,000 and HA.#60,000 Ho. 60,000 and HA:Explanation / Answer
Solution:-
k) SInce the the slope of the graph shows downhill trend hence correlation of the study of kit and course load is negative.
l) C) 65 and 85
m)
State the hypotheses. The first step is to state the null hypothesis and an alternative hypothesis.
Null hypothesis: = 60,000
Alternative hypothesis: 60,000
Note that these hypotheses constitute a two-tailed test.
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