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It is known that 81% of all new products introduced in grocery stores fail (are taken off the market) within 2 years. If a grocery store chain introduces 61 new products, find the following probabilities. (Round your answers to four decimal places.)
a) within 2 years 47 or more fail
b) within 2 years 58 or fewer fail
c) within 2 years 15 or more succeed
d) within 2 years fewer than 10 succeed
a 95 confidence interval for mean diastolic blood pressure in women is 62 to 110. what is the margin of error? what is
The χ 2 statistic from a contingency table with 6 rows and five columns will have:
a candy company distributes boxes of chocolates with a mixture of creams toffees and cordials. suppose that the weight
The probability that a student passes a written test for a private pilot's license is 0.75. What is the probability that a student will fail the test on the first attempt and pass it on the second attempt?
In testing the independence of two variables described in a contingency table, determine the critical value of chi-square if the test is to be conducted at the
In a normal population with sigma=20, a random sample of size n gave X(mean)=56.53. At the 5% significance level, make a two-tailed test of the null hypothesis mu=50, when (a) n=24 (b) n=36
Calculate a 95% confidence interval for the population mean, based on the sample 10, 12, 13, 14, 15, 16, and 49.
Show the decision rule graphically. Use the .05 significance level.
estimate the population mean based on a sample of size 25 for which the average is 100 and the standard deviation is
At α = 0.05, is the correctness of the prediction different for the two types of cola drinkers?
What proportion of children 10-15 years would be classified as hyperlipidemia(assume that hyperlipidemia is defined as a total cholesterol level over 200)?
Each salesperson at stiles compton is rated either below average, average, or above average with respect to sales ability. Each salesperson is also rated with respect to his or her potential for advancement.
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