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A company that makes cola drinks states that the mean caffeine content per 12 ounce bottle of cola is 35 milligrams. You want to test this claim. During your tests, you find that a random sample of thirty 12 ounce bottles of cola has a mean caffeine content of 35.8 milligrams. Assume the population is normally distributed and the population standard deviation is 6.7 milligrams. At a=.03, can reject the company's claim? Complete parts b through e.
B. Find the critical value.
1. The critical values are ×- ____?
2. The critical value is __?
C. Find the standardized test statistic.
D. Decide whether to reject or fail to reject the null hypothesis.
E. Interpret the decision in the context of the original claim.
A survey is planned to determine the mean annual family medical expenses of employees of a large company. The management of the company wishes to be 95% confident that the sample mean is correct to within plus-or-minus $50 of the population mean.
Translate the following statements into symbolic form using capital letters to represent affirmative English statements.- A necessary condition for a successful business venture is good planning.
The probability is 0.60 that a famous Nigerian distance runner will enter the Boston marathon. If he does not enter, the probability that last year's winner will repeat is 0.66, but if he enters, the probability that last year's winner will repeat..
Bloomington Co. is a large U.S.-based MNC with large subsidiaries in Germany. It has issued stock in Germany in order to establish its business. It could have issued stock in the United States and then used the proceeds in order to support the gro..
Using a separate 2 by 2 table, compute predictive value positive and predictive value negative for population of 1,000 drug users.
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If 8 patients participate in this study (so that n left arms and n left arms are measured), how many degrees of freedom should the researcher use in her t-test critical value?
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