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Kindergarten children have heights that are approximately normally distributed about a mean of 38.8 inches and a standard deviation of 1.5 inches. If a random sample of 21 is taken, what is the probability that the sample of kindergarten children has a mean height of less than 39.4 inches? (Give your answer correct to four decimal places)
Use these data to create a data-based CDF for the distribution of weights for lab animals. Estimate the probability that an animal's weight will be less than 9.5 grams.
What percentage of these kettles will last between 90 and 110 months? The appliance giant offers a replacement guarantee on kettles which malfunction within a certain time of the purchase.
Listed below are the highway fuel consumption amounts (in mi/gal) from cars in three different categories. Use a 0.05 signifiacance level to test the claim that the different car categories have the same median highway fuel consumption.
question 1 if 100 random samples of size n were drawn and if for each a 99 confidence interval fornbspmu was computed
the manufacturer of hardness testing equipment uses steel-ball indenters to penetrate metal that is being tested.
The singer has the following variety of songs, in no particular order: 7 relationship songs, 6 songs about people, 4 reflective songs, and 4 songs about places.
a gas undergoes three processes in series that complete a cycleprocess 1 - 2 compression from p1 10 lbfin2 v1 4.0 ft3
Suppose that 10 years ago the average annual expense for stock funds was 1.19 percent. Let µ be the current mean annual expense for all stock funds, and assume that stock fund annual expenses are approximately normally distributed.
In your resources are three news articles that report on scientific studies and make recommendations on the basis of them. Write a paper analyzing these articles. For each article answer these questions and give reasons for your answers:
An economic researcher would like to know whether he can reject the null hypothesis at the 0.10 level, that no more than 20% of the households in Pennsylvania make more than $70,000 per year.
Consider the single-sample plan that utilizes n = 50 and c = 1 when N = 2000. Determine the values of AOQ and ATI for selected values of p, and graph each of these against p. Also determine the value of AOQ
can you please help me with this question? thank you so much.a large publishing house recently conducted a survey to
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