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32?% of adults say cashews are their favorite kind of nut. You randomly select 12 adults and ask each to name his or her favorite nut. Find the probability that the number who say cashews are their favorite nut is? (a) exactly? three, (b) at least? four, and? (c) at most two. If? convenient, use technology to find the probabilities.
?(a) ?P(3)equals=
?(Round to the nearest thousandth as? needed.)
?(b) ?P(xgreater than or equals≥?4)equals=
?(c) ?P(xless than or equals≤?2)equals=
in an experiment 50 individuals were told that they had just purchased a ticket to a concert and 50 were told that they
The time it takes an international telephone operator to place an overseas phone call is normally distributed with mean 45 seconds and standard deviation 10.
phone calls arrive at the rate of 48 per hour at the desk for regional airways1 compute t he probability of recieving
a researcher is studying the weight changes that women go through over the course of pregnancy childbirth and
Use the level and power values for the paired t test and Wilcoxon signed-rank test given in Table 6.18 to answer the following questions:
Tar and NicotineEvery year the Federal Trade Commission (FTC) must report tar and nicotine levels in cigarettes to Congress. The FTC obtains the tar and nicotine levels in over 1200 brands of cigarettes. A random sample from those reported to Con..
The engineer collects a random sample of items and ?nds that 5 out of the 16 items in the sample are defective. Find the engineer's posterior probability distribution of the proportion of defective items.
Suppose that an IQ test was given to a large group of persons, the scores are assumed to be from a normally distributed population, that mean = 100 and s (standard deviation) = 15.
Summarize the data by giving the estimates of the two population proportions and a 95% confidence interval for their difference. Briefly summarize what the data show.
An individual federal tax return form asks, among other things, for the given information: - Describe the scale of measurement of each variable, and state whether the variable is qualitative or quantitative.
a c chart is to be used to control soldering imperfections on a certain mass-produced circuit board. after 250 circuit
Muscle tension dysphonia (MTD) can masquerade as adductor spasmodic dysphonia (ADSD), leading to diagnostic confusion.
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