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Women's heights are normally distributed with mean 63.6 and standard deviation of 2.5 in. A social organization for tall people has a requirement that women must be at least 70 in tall. What percentage of women meet that requirement?
The percentage of women that are taller than 70 in is ______(Round to two decimal places as needed)
A flour mill produces flour in small bags before distributing them to wholesalers. The average weight of each bags is 8 kg with a standard deviation of 0.5 kg.
The bank wishes to inform prospective customers that '99 times out 100 we can process your application in q working days'. Assuming that the normal distribution is still an adequate model, calculate q.
It is believed that the range of hourly wages paid to auto mechanics in a large city is $9 (range approx. = 4sigma-squared). If we assume that hourly wages are approximately normally distributed,
The mean top of knee height of a sitting mate is 20.7 in.
Identify the type of sampling (random, systematic, convenience, stratified, cluster) used when a sample of people who smoke is obtained as described below.
A survey of college students collected information on several variables: Distance from Home, Age, Major, Gender, and Class. The variable Major is
Determine the following:Mean, Median and Variance.
Find out the expected winnings for a person who buys one ticket.
Students in the social work course received the following course grades. Create a frequency distribution for this data. Compute the mean. Determine the median.
Use a 0.05 significance level to test the claim that these credit rating are from a population with a mean that is equal to 700.
To test whether the significant difference between two sample variance using F-tests.
The weights (in pounds) of a sample of five boxes being sent by UPS are: 12, 6, 7, 3, & 10.
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