Mathematics, 04.12.2021 01:10 TimothyYash6684
The National Weather Service keeps records of rainfall in valleys. Records indicate that in a certain valley, the annual rainfall has a mean of and a standard deviation of Suppose the rainfalls are sampled during randomly picked years and is the mean amount of rain in these years. For samples of size 49, determine the mean and standard deviation of .
Answers: 1
Mathematics, 21.06.2019 16:50
The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?
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Secant ac and bd intersect at point e inside f what is the measure of aed if measurements cd equals 30 a b is 50 and cb is 170
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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: μ=6.4 and ha: μ> 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
The National Weather Service keeps records of rainfall in valleys. Records indicate that in a certai...
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