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Eleanor scores 680 on the mathematics part of the SAT. The distribution of SAT math scores in 2007was Normal with mean 515 and standard deviation 114. Gerald takes the ACT Assessment mathematics test and scores 27. ACT math scores for 2007 were Normally distributed with mean 21.0 and standard deviation 5.1.
What is Eleanor's standardized score? Round your answer to 2 decimal places.
What is Gerald's standardized score? Round your answer to 2 decimal places.
If the monthly demand for videos on average is 180 and standard deviation = 60, what is the number of videos the manager should order to meet 90% customer demand?
She randomly samples 67 CFOs and finds that 40 of them get their money news from newspapers. Does the test show enough evidence to reject the findings of Robert Half International? Use a = .05.
Suppose that the mortgage payments of all homeowners have a normal distribution. What is the mean monthly mortgage paid by all homeowner?
Of 880 respondents, 171 admitted that at least one light had been red. Follow four-step process to create 95% confidence interval.
Using the raw measurement data presented below, calculate the t value for independent groups to determine whether or not there exists a statistically significant difference between the salaries of female and male human resource managers.
What is the probability that the mean contents of a six-pack are less than 12 ounces and what is the chance I find at most two defectives in the sample
Would a normal model be appropriate to describe the distribution of sale prices?
The given data show the age distribution of top 14 doctors in emergency faculty of local hospital.
In a survey of women in a certain country (ages 20-29), the mean height was 62.9 inches with a standard deviation of 2.81 inches.
Determine the probability that at most 4 fish will be killed?
The president of the American Insurance Institute wants to compare the yearly costs of auto insurance offered by two leading companies.
Compute the probability that randomly chosen student with a Master's degree majored in English or mathematics?
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