Mathematics, 12.12.2019 06:31 spookymod4845
Arandom sample of 50 suspension helmets used by motorcycle riders and automobile race-car drivers was subjected to an impact test, and some damage was observed on 18 of these helmets.
a) what is the point estimate of the he true proportion of helmets that would show damage from this test
b) find a 95% two-sided confidence interval on the true proportion of helmets that would show damage from this test.
c) using the point estimate of p from the 50 helmets, how many helmets must be tested to be 95% confident that the error in estimating p is less than 0.02?
Answers: 3
Mathematics, 21.06.2019 20:10, tiggyandrep2dbee
Look at the hyperbola graphed below. the hyperbola gets very close to the red lines on the graph, but it never touches them. which term describes each of the red lines? o o o o a. asymptote b. directrix c. focus d. axis
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Mathematics, 22.06.2019 02:30, lauren21bunch
The distribution of a sample of the outside diameters of pvc pipes approximates a symmetrical, bell-shaped distribution. the arithmetic mean is 14.0 inches, and the standard deviation is 0.1 inches. about 68% of the outside diameters lie between what two amounts?
Answers: 1
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