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Finding probability values for the given data using normal approximation
Find the indicated probability.
The diameters of bolts produced by a certain machine are normally distributed with a mean of 0.30 Inches and a standard deviation of 0.01 inches. What percentage of bolts will have a diameter greater than 0.32 inches?
a. 47.72%
b. 97.72%
c. 37.45%
d. 2.28%
Transportation problem using the stepping stone method
To test the difference between two means using two mean z test.
Compute the appropriate test statistic to test Ho: p = 80/100 vs. Ha: p > 80/100.
To forcast the sample size within 0.02 with 90 percent confidence. The CEO of the organization needs to forcast the proportion of Canadians who own their house.
Can we conclude that there is a positive association between the size of the home and the selling price? Use the .05 significance level.
If p denotes the p -value of the corresponding hypothesis test, which of the following is true?
The number of passengers on the Carnival Sensation during one-week cruises in the Caribbean follows the normal distribution.
Can we conclude a difference in voting patterns for men vs. women? YES or NO (circle one)
It is not unusual for a battery to have life span that is more than 2470 hours as the z-score is within 2 standard deviations of mean.
Find out the expected shape of distribution of sample mean?
Evaluate the area under the standard normal curve that lies to the left of z = - 3.49 and simple random sample of size
Choose the proper conclusion regarding the claim that the population have different variances.
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