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In "Predicting Reproduction in Captive Sea Otters," published in the journal Zoo Biology in 2005, gestation lengths for an otter named Mali who became pregnant four times from 1998 to 2001 are listed: 220 days, 255 days, 249 days, and 188 days.7 Explain why these lengths should not be used to estimate the mean gestation length of all captive sea otters.
Fewer than 30 individuals watched a movie at home this week ? b) More than 42 individuals watched a movie at home this week ?
let x be a random variable that represents the number of students who are absent on a given day from a class of 25. the
the diameters of a new species of apple have a bell-shaped distribution with a mean of 7.26cm and a standard deviation
A random sample of size n from a normal population with σ2 = 1 is to be used to test the null hypothesis μ = μ0against the alternative hypothesis μ = μ1, where μ1 > μ0. Use the Ney man-Pearson lemma to find the most powerful critical region of size α..
A random sample of 24 groups of adults has a mean daily lodging cost of $233 and a standard deviation of $12.50. Is there enough evidence to reject the claim at α= 0.10? Assume the population is normally distributed.
If two registered voters are selected at random, what is the probability exactly one voter is a democrat?
What is the probability that 19 from a sample of 22 shoppers will spend less than $20? What is the probability that at least 12 but not more than 17 from a sample of 22 shoppers will spend less than $20?
Describe how multiple correlation and/or regression analysis is (or could be) applied in your work or life environments. Define the dependent and independent variables.
Which of the following conditions must be met to conduct a test for the difference in two sample means? Suppose we test the difference between two proportions at the 0.05 level of significance. If the computed z is -1.07, what is our decision?
1. A study determined that 6% of persons age 65 to 74 have a certain symptoms. A group of 18 persons age 65 to 74 are selected at random. Find the probability that at least 2 persons have the symptoms.
100 M&M candies are randomly selected. The 100 weights have a standard deviation of 0.0518 g. Construct a 95% confidence interval estimate of the standard deviation of weights of all M&Ms.
The Ohio Department of Highways is in the process of selecting a new paint for highway use. Four different paint companies have been contact regarding this need and each of the companies has supplied paint for testing.
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