According to the regression equation, for a student who gets 85 on the midterm (one standard deviation above average) what is the predicted final exam grade?

Please provide a detailed solution for the question below   (Table: Physicians per 10,000 Population and Life Expectancy) The table contains a subset of data reported in 2016 by the World Health Organization. Use these data to generate the regression equation for predicting life expectancy in a country from the number of physicians per 10,000 people in that country. To get you started, the mean and the standard deviation for both variables have been calculated. .Please provide detailed solution Table: Physicians per 10,000 Population and Life Expectancy Country  Physicians/10,000 people Life expectancy Bangladesh 4.8 72.7 Cambodia 1.7 69.4 United States 25.9 78.5 Egypt 8.1 70.5 France 32.3 82.9 Japan 24.1  84.2

On a test that has a normal distribution, a score of 60 falls one standard deviation above the mean, and a score of 45 falls two standard deviation's below the mean . Determine the mean of the test.

Find (a) the mean, (b) the standard deviation on an examination in which grades of 70 and 88 correspond to standard scores of −0.6 and 1.4, respectively. Solve via matlab live text.

In a population distribution, a score of X= 57 corresponds to z= -0.25 and a score of X= 87 corresponds to a z= 1.25. Find the mean and standard deviation for the population. Population mean=  Population standard deviation=

A manufacturer of light bulbs finds that one light bulb model has a mean life span of 1030 h with a standard deviation of 83 h.Find the z-scores for lightbulbs which last 840 and 890 h. (Round your answers to two decimal places.) The z-score for 840 h is -2.29; the z-score for 890 h is -1.69.Using the answers from Step 1, what percent of these light bulbs will last between 840 and 890 h? (Round your answer to one decimal place.)

A group of migraine headache sufferers were tracked over their lifetimes with data taken every 10 years. The scatter plot shows the number of headaches per year versus age, in years. How would you estimate the number of headaches at age 100?     Question 2 options:   Draw a line of best fit and interpolate.   Wait until a sufficient number of subjects have reached the age of 100.   Draw a line of best fit and extrapolate.   Use the number from age 80 and divide by 2.

Explain why it makes sense that the standard deviation of X is in the denominator of the formula calculating the standard error of the slope.

In a population distribution, a score of X = 28 corresponds to z = −1.00 and a score of X = 34 corresponds to z = −0.50. Find the mean and standard deviation for the population.

How does a nonzero constant number c change a standard deviation problem?