Question regarding the continuous case
Show that if X and Y are independent, then E[ X| Y = y] = E[ X] for all y ( a) in the discrete case; ( b) in the continuous case.
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Perform a hypothesis test at the 1% significance level. What is a point estimate for the mean (mu)? Describe the critical region for this test by providing the critical values and describing the proper region.
Find the probability that the claim will be rejected assuming that the manufacturers claim is true. Use the normal distribution to approximate the binomial distribution if possible.( Round to four decimal places0\).
Would it be unusual for a battery to have a life span of more of 2055?
A box of 10 gloves contains three left-handed gloves and seven right-handed gloves. Complete parts (a) through (d).
The hunters fire at the same time, but each chooses his target at random, independently of the others. If each hunter independently hits his target with probability .6, compute the expected number of ducks that are hit. Assume that the number of d
A random sample of forty-three 200 meter swims has a mean time of 3.27 minutes and a standard deviation of 0.07 minutes. Construct a 95% confidence interval for the population mean time.
A binomial probability is given. Write the probability in words. Then use a continuity correction to convert the binomial probability to a normal distribution probability.
The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.30 and the sample statistics include n=1463 subjects with 410 saying that they smoked a cigarette in the past week.
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