The following data represent the pH of rain for a random sample of 12 rain dates in a particular region. A normal
probability plot suggests the data could come from a population that is normally distributed. A boxplot indicates
there are no outliers. The sample standard deviation is s = 0.347. Construct and interpret a 90% confidence
interval for the standard deviation pH of rainwater in this region.
4.48 5.24 5.00 4.71 4.71 4.84
5.69 4.67 5.07 4.78 4.65 4.47
Click the icon to view the table of critical values of the chi-square distribution.
Select the correct choice below and fill in the answer boxes to complete your choice.
(Use ascending order. Round to three decimal places as needed.)
A. There is 90% confidence that the population standard deviation is between___
and___
B. If repeated samples are taken, 90% of them will have the sample standard deviation between_
and_
C. There is a 90% probability that the true population standard deviation is between_
and_

Rewrite the following without an exponent. (5/8)-1

The weight v of an object on venus varies directly with its weight e on earth. a person weighing 120 lb on earth would weigh 106 lb on venus. how much would a person weighing 150 lb on earth weigh on venus?

Determine if the following statement is true or false. the normal curve is symmetric about its​ mean, mu. choose the best answer below. a. the statement is false. the normal curve is not symmetric about its​ mean, because the mean is the balancing point of the graph of the distribution. the median is the point where​ 50% of the area under the distribution is to the left and​ 50% to the right.​ therefore, the normal curve could only be symmetric about its​ median, not about its mean. b. the statement is true. the normal curve is a symmetric distribution with one​ peak, which means the​ mean, median, and mode are all equal.​ therefore, the normal curve is symmetric about the​ mean, mu. c. the statement is false. the mean is the balancing point for the graph of a​ distribution, and​ therefore, it is impossible for any distribution to be symmetric about the mean. d. the statement is true. the mean is the balancing point for the graph of a​ distribution, and​ therefore, all distributions are symmetric about the mean.