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4) Joseph and Taylor each take random samples and construct 90% condence intervals for the proportion of a certain college's students that use text messaging more than 20 times daily. Joseph gets (0.72. 0.82), and Taylor gets (0.?6, 0.84). Who used the larger sample size? How do you know? 5) The mileage a car got on 5 trips from City A to City B was used to create a 90% condence interval for the true mean mileage of such trips. The 90% condence interval is (32.32, 38.32). The manufacturer of the car advertises that this model gets 38 miles per gallon. Does the interval indicate that the advertised value is reasonable? Explain your reasoning in a sentence. 6) Read the following problem description then choose the correct alternative hypothesis. A new drug is being tested to see whether it can reduce the diastolic blood pressure measurement for adults aged 45-60 years. The upper limit for diastolic blood pressure measurement should be 90 mmHg. A. HA: p 90 mmHg 0. HA: p = 90 mmHg D. HA: p 90 mmHg