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The 70-year long-term record for weather shows that for New York State, the annual precipitation has a mean of 39.81 inches and a standard deviation of 4.3 inches. The annual precipitation amount has a normal distribution. (Give your answers correct to four decimal places.)
What is the probability that next year the total precipitation for New York State is more than 50.8 inches?
What is the probability that next year the total precipitation for New York State is between 41.3 and 47.2 inches?
What is the probability that next year the total precipitation for New York State is between 30.3 and 37.3 inches?
What is the probability that next year the total precipitation for New York State is more than 35.1 inches?
What is the probability that next year the total precipitation for New York State is less than 46 inches?
What is the probability that next year the total precipitation for New York State is less than 31.7 inches?
You're interested in determining the volume of sales dollars necessary for the coming year to reach the break-even point. You've decided to break down the sales for the club into four categories, they are as follows:
Computing probability values using normal distribution - Find the proportion of the observations will fall in the interval from 40 to 60?
a seven-year medical research study reported that women whose mothers took the drug des during pregnancy were twice as
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A random sample of 121 checking accounts at bank showed an average daily balance of $280 the standard deviation of the population is known to be $6. Find the standard error of the mean.
Survey of 16 tax returns reports families with incomes between $75,000 and 100,000 have on average $8,562 in Standard Deductions with the standard deviation of $1,800.
Find the P value or an interval containing the P value for the sample test statistic.
What is the probability that a randomly selected high school senior's score on the mathematics part of the ACT will be more than 29?
The comparison distribution at which the null hypothesis should be rejected, (b) the Z score on the comparison distribution for the sample score, and (c) your conclusion. Assume that all populations are normally distributed.
Consumer Reports magazine tested paints. The table below shows the overall quality score and cost in dolllars per gallon. Test for a correlation. Based on these results, do you get better quality paint by paying more?
suppose the cost of an observation varies from stratum to stratum where the cost of sampling a unit from stratum j is
Estimate the factor eeffects. Construct a normal probability plot of these eects. Which eeffects appear large?
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