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SAT and ACT Tests- Scores by women on the SAT-I test are normally distributed with a mean of 998 and a standard deviation of 202. Scores by women on the ACT test are normally distributed with a mean of 20.9 and a standard deviation of 4.6. Assume that the two tests use different scales to measure the same aptitude.
A. If a woman gets a SAT score that is the 67th percentile, find her actual SAT score and her equivalent ACT score.
B. If a woman gets a SAT score of 1220, find her equivalent ACT score.
At α = 0.10, can the researcher conclude that alcohol consumption is related to sex? What kind of Chi-Square test is this?
Convert Alisha's grandmother's score to a z score among the distribution of exercise capacity in Americans over seventy years old. Who has a relatively longer exercise capacity compared to her peers-Alisha or her grandmother?
The researcher also gathers data on age and major to see if there is any connection between these varibales and frequency of sexual harassment.
Are you doubtful of any of these data points? if so why does there show to be a linear relation between degree of stenosis and nuber of reactive nuclei?
A portfolio manager believes that tomorrow's foreign exchange rate of German marks per US dollar will be Normally distributed with mean 2.03 and standard deviation 0.08. Using the manager's numbers:
The numbers of years served by selected past members of the U.S. Supreme Court is listed below. Find the percentile rank for each value. Which value corresponds to the 40th percentile? Construct a boxplot for the data and comment on their shape.
Determine fraction of employees cost between $1,500 and $2,000 per year?
What percentage of all samples of size 61 will have a mean value between 454 and 482? Give your answer correct to one decimal place.
A stock price is $30, the expected return is 18% per annum and the volatility is 20% per annum. What is the mean of the logarithm of the stock price in two years?
A standard deviation of 10 grams. If we select one box of cereal at random from this population, what is the probability that it will weigh less than 895 grams?
(A) At the 0.05 level of significance, use the six step critical value approach to hypothesis testing to try and prove that the 2004 proportion has increased. (B) Use the 5 step p-value approach. Interpret the meaning of the p value.
The manufacture of a new compact car claims the miles per gallon (mpg) for the gasoline consumption follow a normal distribution with mean of 25.9 mpg and standard deviation of 9.5 mpg . if 36 such cars are tested , what is the probability the ave..
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