Given the size of a human's brain, x, and their score on an IQ test, y, would you expect a positive
correlation, a negative correlation, or no correlation?
Answer
negative correlation
positive correlation
no correlation
The data below are the temperatures
Math 1342
6-8-2013
Mrs. Cruz-Sealey
In a recent study, volunteers who had 8 hours of sleep were three times more likely to answer
questions correctly on a math test than were sleep-deprived participants.
1. Identify the sample used in this study.
a. The s
Math 1342
6-21-2013
Mrs. Cruz-Sealey
2.4 Problem 36: Use the Empirical Rule
36. Using the sample statistics from Exercise 34, do the following. (Assume the number of farms
in the sample is 40.) [(Exercise 34) The mean value of land and buildings per acre
Math 1342
6-21-2013
Mrs. Cruz-Sealey
2.4 Problem 36: Use the Empirical Rule
36. Using the sample statistics from Exercise 34, do the following. (Assume the number of farms
in the sample is 40.) [(Exercise 34) The mean value of land and buildings per acre
Math 1342
8-02-2013
Mrs. Cruz-Sealey
9.2 Problem 22: High-Fiber Cereals: Caloric and Sugar Content: The caloric contents and the
sugar contents (in grams) of 11 high-fiber breakfast cereals.
Calories
,x
Sugar, y
140
200
160
170
170
190
190
210
190
170
160
Math 1342
8-01-2013
Mrs. Cruz-Sealey
7.2 Problem 38: Fast Food: A fast food restaurant estimates that the mean sodium content in one
of its breakfast sandwiches is no more than 920 milligrams. A random sample of 44 breakfast
sandwiches has a mean sodium c
Math 1342
8-01-2013
Mrs. Cruz-Sealey
7.2 Problem 38: Fast Food: A fast food restaurant estimates that the mean sodium content in one
of its breakfast sandwiches is no more than 920 milligrams. A random sample of 44 breakfast
sandwiches has a mean sodium c
Math 1342
7-11-2013
Mrs. Cruz-Sealey
4.1 Problem 36: Finding expected Value: , use the probability distribution or histogram to find
the (a) mean, (b) variance, (c) standard deviation, and (d) expected value of the probability
distribution, and (e) interp
Math 1342
7-16-2013
Mrs. Cruz-Sealey
5.4 Problem 38: Break Pads A break pad manufacturer claims its brake pads will last for 38,000
miles. You work for a consumer protection agency and you are testing this manufactures brake
pads. Assume the life spans of
Math 1342
6-27-2013
Mrs. Cruz-Sealey
3.4 Problem 56:
56. A warehouse employs 24 workers on first shift and 17 workers on second shift. Eight workers
are chosen at random to be interviewed about the work environment. Find the probability of
choosing.
A. Al