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A binomial experiment is given. Decide whether you can use the normal distribution to approximate the binomial distribution. If you? can, find the mean and standard deviation. If you? cannot, explain why.
A survey of adults found that 44?% have used a multivitamin in the past 12 months. You randomly select 40 adults and ask them if they have used a multivitamin in the past 12 months.
Yes, the mean is ___ and the standard deviation is ____
?(Round to two decimal places as? needed.)
Determine the 90% prediction interval for the calculus final exam score for an entering freshman who scored 70 on the math proficiency test and 500 on the quantitative portion of the SAT.
We have the following data: sample mean ¯x= 42.6, sample deviation s= 2, number of samples n= 33 and the null hypothesis is µ0= 42.
Using the EMV criteria (you wish to maximize expected profits in this case) determine what course of action that Optel should take. Make sure to state the best strategy in words.
Compute the p-value and interpret its meaning - Construct a 95% confidence interval estimate of the population mean life of the light bulbs.
Suppose a certain brand of Westinghouse light bulbs has a population life expectancy of 3000 and a population standard deviation equal to 100. (Assume the distribution of the population is normal). What is the probability that a sample of 30 light..
Calculate the difference scores and find MD for the following data from a repeated-measures study. The data below are from an independent-measures experiment comparing three different treatment conditions.
computing a two-independent sample t-test is appropriate when?a different participants are assigned to each groupb the
Each day, Monday through Saturday, a baker bakes three large chocolate cakes, and those not sold on the same day are given away to a food bank. Use the data shown in the following table to test at the 0.05 level of significance whether they may be..
1. if a random variable has the probability density defined as fxx2x 0ltxlt1 identify the corresponding hazard
1. a candidate for one of ohios two u.s. senate seats wishes to compare her support among registered voters in the
How many students should be surveyed if a 90% confidence interval is desired and the margin of error is to be only 3%?
A random check of 81 records of inmates from all federal prisons found the confidence interval for mean prison terms per prisoner to be 2.113 years to 2.287 years.
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