Mathematics, 11.12.2019 23:31 Bryson2148
The manufacturer of the x-15 steel-belted radial truck tire claims that the mean mileage the tire can be driven before the tread wears out is 60,000 miles. assume the mileage wear follows the normal distribution and the standard deviation of the distribution is 5,000 miles. crosset truck company bought 48 tires and found that the mean mileage for its trucks is 59,500 miles. crosset would like to know if their experience is different from the manufacturer’s claim. is crosset's experience different from that claimed by the manufacturer at the .05 significance level
(a) state the null hypothesis and the alternate hypothesis.
(b) state the decision rule.
(c) compute the value of the test statistic.
(d) what is your decision regarding h0?
(e) what is the p-value? interpret it.
Answers: 2
Mathematics, 21.06.2019 15:30
The area of a rectangle is 15+5y square feet. which of the following expressions could be the length of the sides of the rectangle, in feet a. 5 and 3y b. 5 and 3+y c. 5 and 5+y d. 3 and 5+3y
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Mathematics, 21.06.2019 19:30
Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin
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Mathematics, 21.06.2019 20:00
In one day there are too high tides into low tides and equally spaced intervals the high tide is observed to be 6 feet above the average sea level after six hours passed a low tide occurs at 6 feet below the average sea level in this task you will model this occurrence using a trigonometric function by using x as a measurement of time assume the first high tide occurs at x=0. a. what are the independent and dependent variables? b. determine these key features of the function that models the tide: 1.amplitude 2.period 3.frequency 4.midline 5.vertical shift 6.phase shift c. create a trigonometric function that models the ocean tide for a period of 12 hours. d.what is the height of the tide after 93 hours?
Answers: 1
The manufacturer of the x-15 steel-belted radial truck tire claims that the mean mileage the tire ca...
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