Mathematics, 09.09.2021 23:50 ayoismeisjjjjuan
An object is dropped from 29 foot below the tip of the pinnacle atop a 929-A tall building. The height of the object after seconds is given by the equation h - 167.900. Find how many seconda pans before the beaches the ground
seconds pass before the object reaches the ground.
(Type an integer or a decimal.)
Answers: 1
Mathematics, 22.06.2019 01:50
According to a study done by de anza students, the height for asian adult males is normally distributed with an average of 66 inches and a standard deviation of 2.5 inches. suppose one asian adult male is randomly chosen. let x = height of the individual. a) give the distribution of x. x ~ b) find the probability that the person is between 64 and 69 inches. write the probability statement. what is the probability?
Answers: 2
Mathematics, 22.06.2019 02:30
According to a research study, parents with young children slept 6.4 hours each night last year, on average. a random sample of 18 parents with young children was surveyed and the mean amount of time per night each parent slept was 6.8. this data has a sample standard deviation of 0.9. (assume that the scores are normally distributed.) researchers conduct a one-mean hypothesis at the 5% significance level, to test if the mean amount of time parents with young children sleep per night is greater than the mean amount of time last year. the null and alternative hypotheses are h0: Ī¼=6.4 and ha: Ī¼> 6.4, which is a right-tailed test. the test statistic is determined to be t0=1.89 using the partial t-table below, determine the critical value(s). if there is only one critical value, leave the second answer box blank.
Answers: 3
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