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Women's heights are normally distributed with mean 63.7 in 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 the requirements.
The price of each selected item was checked at each of the three chains on the sames day. Use 0.05 level of significance. What is the decision rule for both.
A state transportation official claims that the mean waiting time at exit booths from a toll road near the capitol is no more than .40 minutes. for a sample of 35 motorists exiting the toll road, it was found that the mean waiting time was .46 min..
A geography teacher is interested in the link between mathematical ability and the ability to visualize three dimensional situations.He gives a group of 15 students a test and records each students score
Given that the average monthly amount charged is uniformly distributed, what percent of monthly charges are between $100 and $1100?
Identify the independent and dependent variable, and state the research hypothesis for your study. The variables must be categorical variables.
Given the following information about a hypothesis test of the difference between 2 means based on independent random samples, what is the correct rejection region at a significance level of .05?
If someone had x=2 job changes, what does the least squares line predict for y, the annual salary?
a sample of 3 items is selected at random from a box containing twenty items of which 4 are defective. the expected
Due to increase in product demand, management needs to increase labor production hours by an estimated 270 hours. Any-Business currently has 30 production employees whose hourly wages varies from $7.50 - $8.50 per hour.
Suppose you toss a die 100 times in a row. What is the probability that you see 4 spots between 10 and 20 times?
If the opinion poll had announced the margin of error for 80% confidence rather than 95% confidence, this margin of error would be?
A ten year old survey found that the average income of sole proprietor CPA's was $74,914. To update this information, a new survey of 112 proprietor CPA's was taken and it showed a mean of $74,695.
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