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Heights? (cm) and weights? (kg) are measured for 100 randomly selected adult? males, and range from heights of 137 to 191 cm and weights of 40 to 150 kg. Let the predictor variable x be the first variable given. The 100 paired measurements yield x overbar =167.55 ?cm, y overbar =81.35 ?kg, r =0.153?, ?P-value =0.129?, and Y hat = -107 + 1.17x. Find the best predicted value of y hat (weight) given an adult male who is 169 cm tall. Use a 0.05 significance level.
The answer I came up with was y Hat= -107 + 1.17 * 169 = 90.73kg . I can't figure out what i'm doing wrong ?(Round to two decimal places as? needed.)
A research concludes that the number of hours of exercise per week for adults is normally distributed with a mean of 4 hours and a standard deviation of 2.5.
Suppose that you ask all math majors in their fourth year whether or not they think that including statistics in the core curriculum is a good idea.
Investigators are studying two drugs used to improve the FEVl readings (a measure of lung function) in asthmatic patients.
suppose there is a correlation of 0.87 between the length of time a person is in prison and the amount of aggression
Find the β risk and power assuming that the true mean is really 380 square feet per gallon. (b) Construct a left-sided power curve, using increments of 5 square feet (400, 395).
1. ten employees at a company picnic are to stand in a row for a group photograph. in how many ways can this be done
The histogram shows the distribution of the prices of a small, plain pizza (in $) for 156 weeks in Dallas, Texas.- Which summary statistics would you choose to summarize the center and spread in these data? Why?
You play a new game with coins where you flip a coin twice. You win $2 for both being "heads", you win $3 for both being "tails", and you lose $4 otherwise.
Prepare WBS which indicates all the deliverables of installing swimming pool kits at homes.
Dull Rats In a classic experiment that was designed to test whether the experimenter's expectations could really influence the results, Rosenthal and Fode.
What causes a forming planet to become molten? Why are Earth and Venus still volcanic while Mars is not?
What is the probability that pˆ will exceed the true fraction nonconforming by k standard deviations, where k = 1, 2 and 3?
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