Mathematics, 26.03.2021 19:00 Santos7446
The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took the customers in the sample to check out was 3.1 minutes. The population standard deviation is known at 0.5 minutes. We want to test to determine whether or not the mean waiting time of all customers is significantly different than 3 minutes. Use a = 0.05. The test statistic is a 1.96 b. 1.64 c. 2.00 d. 0.056 The p-value is a. 0.0456 b. 0.0482 c. 0.4772 d. 0.9759 e. 0.9772 At the 5% level, you a. fail to reject the null hypothesis b. reject the null hypothesis
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Which of the following values are in the range of the function graphed below? check all that apply ! - will give the answer "brainliest! "
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Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?
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Sawsan recorded the favorite sport of students at her school. she surveyed 200 students. how many students chose tennis?
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The manager of a grocery store has taken a random sample of 100 customers. The average length of tim...
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