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A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 129 scores obtained from individuals who were bullied yielded a mean of 39.5 and a standard deviation of 6.6.
What are the degrees of freedom?
question a survey of the opinions of property owners about a street widening project was taken to determine whether the
The X variable is time and the Y variable is examination grade. Calculate r. Use Table A to determine if it is statistically significant.
You are working on an analysis of your company's current cost structure reviewing the various fixed and variable costs within your firm.
If the portfolio's standard deviation is 10%, what is the correlation coefficient between the returns of the Bond Fund (B) and the Stock Fund (S)?
Let's further assume that you also know that other than price, IBM has significant advantages in all areas over your product. What would you do?
Anticipated consumer demand in a restaurant for frre range steaks next month can be modeled by a normal random variable with mean 1200 pounds.
a. Two?-tailed ?test, a=0.07. ?(Round to two decimal places as needed. Use a comma to separate answers as ?needed.)
The probability of making a successful sale is 0.58. What is the probability the salesman will make at least 18 sales for the week (Binomial distribution).
Does this cast doubt on the legislator s figure of 12%? Use a simulation to estimate the likelihood of seeing at least 4 of 10 randomly selected drivers talking on their cell phones if the actual rate of usage is 12%. Explain your conclusion clear..
Define and differentiate between the gross autopsy rate and the net autopsy rate and Include illustrations of how to calculate both the gross and net autopsy rate
What is the probability that a randomly chosen woman with Type II Diabetes has a BMI greater than 50.04?
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?
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