Determine predicted final exam score for student

Reference no: EM13108634

For students who take Statistics 101 at Lake Wobegon College in Minnesota, both X = midterm exam score and Y = final exam score have mean = 75 and standard deviation = 10.

a) Prediction equation is y^ = 30 + 0:60x. Determine predicted fi nal exam score for student who has (i) midterm score = 100, (ii) midterm score = 50. Note that predicted fi nal exam score regresses toward mean.

b) Show that the correlation equals 0.60.

c) If instead, y^ = x, show that r = 1.0

d) If instead, y^ = 75, show that r = 0.0.

Reference no: EM13108634

Questions Cloud

Techniques of estimating demand functions : Forecasting collect data using techniques of estimating demand functions in an attempt to forecast sales and prices.

Explain how many cameras will camco produce : The marginal cost of the InFocus division for making the lenses is given by the equation MCl = 0.30 + 0.0004Ql. Each camera requires one lens. Explain how many cameras will Camco produce and illustrate what price will be charged for each?

Identify the null and alternative hypotheses : You are the manager of the Gander Mountain store in Frogtown, Illinois. Recently, a customer mentioned that they believed your prices for ammunition were lower than the prices of Gander's primary competitor in the hunting equipment market, Cabela's.

Illustrate what were the organization budgeted payments : If purchases for January, February and March were $200,000, $180,000 and $230,000, respectively, illustrate what were the organization's budgeted payments in March?

Determine predicted final exam score for student : Prediction equation is y^ = 30 + 0:60x. Determine predicted final exam score for student who has (i) midterm score = 100, (ii) midterm score = 50. Note that predicted nal exam score regresses toward mean.

Which one of the subsequent is not comprised as part : According to the cost allocation procedures examined on the Help screens for the Private Label Sales Report and the Marketing and Admin Report, which one of the subsequent is not comprised as part of an industry’s cost in supplying private-label f..

Estimate the annual cost of ordering : A car rental agency uses 96 boxes of staples a year. The boxes cost $4 each. It costs $10 to order staples, and carrying costs are $0.80 per box on an annual basis.

Demand and supply equations in a market : The demand and supply equations in a market are given as Q = 30 - 2P and Q = 10 + 2P. If the government imposes a tax of $0.50/unit on the suppliers,

Find out vl and rs if the industry uses million of rs : Find out VL and RS, if the industry uses $5million in debt with a cost of 7%. Use the extension of the MM model that allows for growth.

User Account

All Pages