五 As part of a water quality survey,. you test the water hardness in several randomly selected streams. The results are shown below. Construct a confidence inte and the population standard deviation o. Use a 95% level of confidence. Assume that the population has a normal distribution. n=24 s= 15 grains per gallon ....D What is the confidence interval for the population variance o ? | | D (Round to one decimal place as needed.) Interpret the results. Select the correct choice below and fill in the answer box(es) to complete your choice. (Round to one decimal places as needed.) O A. With 5% confidence, it can be said that the population variance is O B. With 95% confidence, it can be said that the population variance is less between than pue OC. With 95% confidence, it can be said that the population variance is O D. With 5% confidence, it can be said that the population variance is between greater than pue What is the confidence interval for the population standard deviation o? CHD (Round to one decimal place as needed. Interpret the results. Select the correct choice below and fill in the answer box(es) to complete your choice. (Round to one decimal places as needed.) OA. With 95% confidence, you can say that the population standard O B. With 95% confidence, you can say that the population standard deviation is between pue grains per gallon. deviation is less than grains per gallon. OC. With 5% confidence, you can say that the population standard deviation O D. With 5% confidence, you can say that the population standard deviation is between and grains per gallon. is greater than grains per gallon. O Time Remaining: 01:04:53 Next

Select the most appropriate answer. The prediction error for an observation, which is the difference between the actual value and the predicted value of the response variable, is called O a residual O a correlation O an outlier O an extrapolation

Cereals sodium values have a mean of 167 and a standard deviation of 77.3. Find the z-score for the cereal that has a sodium value of 0. How would you interpret this z-score?

Plz help asap t7.

A mean function E(Y IX = x) tells us: the probability of observing the value Y. O whether or not to reject the null hypothesis. how much data we need to collect. how the expected value of Y changes as X varies.

The time to complete an exam is approximately Normal with a mean of 45 minutes and a standard deviation of 4 minutes. The bell curve below represents the distribution for testing times. The scale on the horizontal axis is equal to the standard deviation. Fill in the indicated boxes.. μ-20 μισ μ-36 μ-20 μ μ+o μ=45 σ = 4 μ+20 μ+30

Refer to the data set in the accompanying table. Assume that the paired sample data is a simple random sample and the differences have a distribution that is approximately normal. Use a significance level of 0.05 to test for a difference between the weights of discarded paper​ (in pounds) and weights of discarded plastic​ (in pounds).   LOADING... Click the icon to view the data. In this​ example, μd is the mean value of the differences d for the population of all pairs of​ data, where each individual difference d is defined as the weight of discarded paper minus the weight of discarded plastic for a household. What are the null and alternative hypotheses for the hypothesis​ test?     A. H0​: μd≠0 H1​: μd>0   B. H0​: μd=0 H1​: μd<0   C. H0​: μd=0 H1​: μd≠0   D. H0​: μd≠0 H1​:  μd=0     Household Paper Plastic   1   6.44   8.40     2   7.72   3.86     3   3.27   0.63     4   9.19   3.74     5   14.33   6.43     6   11.08   12.47     7…