The average local cell phone call length was reported to be 3.25 minutes. A random sample of 22 phone calls showed an average of 3.65 minutes in length with a standard deviation of 0.91 minutes. Atα= 0.05, can it be concluded that the average local cell phone call length is more than the population average? Assume that the population is approximately normally distributed. a.1) State the hypotheses. Fill the blanks by these words: equal to, not equal to, greater than, less than, greater or equal to, less than or equal to, Separate your answers with comma. Ho: μ is ...? minutes Ha: μ is ...? minutes 2) Which distribution should be used? Fill the blanks by these words: z or t ...? table. 3) What type of test it will be? Fill the blanks by these words: left, right or two....? tailed test. b) Find the critical value(s). If there is more than one critical value, separate them with comma in between. c) Compute the test statistics. Round to three decimal places.
The average local cell phone call length was reported to be 3.25 minutes. A random sample of 22 phone calls showed an average of 3.65 minutes in length with a standard deviation of 0.91 minutes.
Atα= 0.05, can it be concluded that the average local cell phone call length is more than the population average? Assume that the population is approximately
a.1) State the hypotheses. Fill the blanks by these words: equal to, not equal to, greater than, less than, greater or equal to, less than or equal to, Separate your answers with comma. Ho: μ is ...? minutes Ha: μ is ...? minutes
2) Which distribution should be used? Fill the blanks by these words: z or t ...? table.
3) What type of test it will be? Fill the blanks by these words: left, right or two....? tailed test.
b) Find the critical value(s). If there is more than one critical value, separate them with comma in between.
c) Compute the test statistics. Round to three decimal places.
d)Make the decision.
Fill the blanks with these words:Critical or acceptance and reject or fail to reject. Separate your answers with comma in between.
The test statistics falls under the ...? region
Therefore,...? null hypothesis.
e) Summarize the results. Fill the blank with either enough or not enough words. Therefore, this is ...? evidence to support the claim that the average local cell phone call length is more than the population average.
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