Suppose that in a certain chemical process the reaction time y (hr) is related to the temperature (°F) in the chamber in which the reaction takes place according to the simple linear regression model with equation y = 5.00 −.01x and 휎= .075.a. What is the expected change in reaction time for a 1°F increase in temperature? For a 10°F increase in temperature? (2 marks)b. What is the expected reaction time when temperature is 200°F? When temperature is 250°F? (2 marks)c. Suppose five observations are made independently on reaction time, each onefor atemperature of 250°F. What is the probability that all five observationsarebetween 2.4 and 2.6 hr? (6 marks)d. What is the probability that two independently observed reaction times for temperatures1°apart are such that the time at the higher temperature exceeds the time at the lower temperature

Which function is increasing? o a. f(x)=(1/15)* o b. f(x)= (0.5)* o c. f(x)=(1/5)* o d. f(x) = 5*

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

It appears that people who are mildly obese are less active than leaner people. one study looked at the average number of minutes per day that people spend standing or walking. among mildly obese people, the mean number of minutes of daily activity (standing or walking) is approximately normally distributed with mean 376 minutes and standard deviation 64 minutes. the mean number of minutes of daily activity for lean people is approximately normally distributed with mean 528 minutes and standard deviation 107 minutes. a researcher records the minutes of activity for an srs of 7 mildly obese people and an srs of 7 lean people. use z-scores rounded to two decimal places to answer the following: what is the probability (image for it appears that people who are mildly obese are less active than leaner people. one study looked at the averag0.0001) that the mean number of minutes of daily activity of the 6 mildly obese people exceeds 420 minutes? what is the probability (image for it appears that people who are mildly obese are less active than leaner people. one study looked at the averag0.0001) that the mean number of minutes of daily activity of the 6 lean people exceeds 420 minutes?