A recent study stated that if a person chewed gum, the average number of sticks of gum he or she chewed daily was 8. To test the claim, a researcher selected a random sample of 36 gum chewers and found the mean number of sticks of gum chewed per day was 9. The standard deviation of the population is 1. At α = 0.05, is the number of sticks of gum a person chews per day actually greater than 8? Required steps: 1) label all given information 2) state the null and alternative hypothesis and identify the claim 3) verify that the conditions are met to perform the test 4) sketch the normal distribution (curve) and find the critical regions 5) compute the test statistic 6) make a decision to reject or not reject the null hypothesis 7) summarize the results in a statement
A recent study stated that if a person chewed gum, the average number of sticks of gum he or she chewed daily was 8. To test the claim, a researcher selected a random sample of 36 gum chewers and found the mean number of sticks of gum chewed per day was 9. The standard deviation of the population is 1. At α = 0.05, is the number of sticks of gum a person chews per day actually greater than 8?
Required steps:
1) label all given information
2) state the null and alternative hypothesis and identify the claim
3) verify that the conditions are met to perform the test
4) sketch the
5) compute the test statistic
6) make a decision to reject or not reject the null hypothesis
7) summarize the results in a statement
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