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Finding the value of X using normal distribution given standard deviation and mean.
A math teacher gives two different tests to measure students' aptitude for math. Scores on the first test are normally distributed with a mean of 22 and a standard deviation of 5.2. Scores on the second test are normally distributed with a mean of 72 and a standard deviation of 11.5. Assume that the two tests use different scales to measure the same aptitude. If a student scores 28 on the first test, what would be his equivalent score on the second test? (That is, find the score that would put him in the same percentile.)A. 86B. 85C. 78D. 83
What is the probability that a cereal would either high calorie or high fiber? In other words, what is P(high calorie or high fiber)?
In past, mean processing time was 45 days. At 0.05 level of significance, is there evidence that mean processing time has changed from 45 days?
The level of significance indicates the probability of rejecting a false null hypothesis.
Describe the data appear the strength of the relationship among variables is sufficient to warrant using linear regression forecasting.
What is the probability that a respondent said neither the Big Ten nor the Pac-10 would have a team in the Rose Bowl?
Evaluate the multiple regression model between quantity sold (Y) and following explanatory variables: average price of deep-dish pizzas, monthly advertising expenditures, and disposable income per household in areas surrounding outlets.
If the computed value for this problem is +2.33, and the level of significance is 0.05, can we conclude that the recall proportions for the two commercials are same?
What sample size should be chosen so that there is 0.95 probability of estimating the mean monthly income in $150 or less?
If the basket ball player is a 74% free throw shooter, then, on average, how many free throws will he or she make in a game with eight free throw attempts?
What was the success probability of each O-ring?
Suppose each employee in the company receives a $3000 raise for next year (each employee's salary is increased by $3000). The interquartile range of the salaries will
Determine the dependent variable(s)? Determine the value of the statistic? Write down the name of one variable not mentioned in this study that one might wish to control for.
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