The number of ants per acre in the forest is normally distributed with mean 44,000 and standard deviation 12,064. Let X = number of ants in a randomly selected acre of the forest. Round all answers to 4 decimal places where possible. c. Find the probability that a randomly selected acre has between 40,752 and 47,997 ants. Correct  d. Find the first quartile.  ants (round your answer to a whole number)

The average number of words in a romance novel is 64,289 and the standard deviation is 17,272. Assume the distribution is normal. Let X be the number of words in a randomly selected romance novel. Round all answers to 4 decimal places where possible.b. Find the proportion of all novels that are between 62,562 and 79,834 words. ________________c. The 85th percentile for novels is  words. (Round to the nearest word) ________________d. The middle 70% of romance novels have from _______ words to _______ words. (Round to the nearest word)

I need the answer for B and C please

answer all and asap i will upvote

Use the standard normal table to find the z-score that corresponds to the given percentile. If the area is not in the table, use the entry closest to the area. If the area is halfway between two entries use the z-score halfway between the corresponding z-scores. If convenient, use technology to find the z-score. P 25 Click to view page 1 of the table. Click to view page 2 of the table. The z-score that corresponds to P25 is (Round to two decimal places as needed.)

Assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find the probability of a bone density test score greater than 0. Sketch the region. Choose the correct graph below. O A. OB. C. ntents a Library The probability is (Round to four decimal places as needed.) Enter your answer in the answer box and then click Check Answer All parts showing Clear All Check Anwr

Assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find the probability of a bone density test score between 1.83 and 1.83. Sketch the region. Choose the correct graph below. O A. -1.83 1.83 B. -1.83 *** 1.83 O C. -1.83 1.83 O D. -1.83 1.83

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…

Assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1. Find the probability that a given score is less than 0.89 and draw a sketch of the region. Sketch the region. Choose the correct graph below. O A. -0.89 The probability is (Round to four decimal places as needed.) B. -0.89 0.89 C. A -0.89 D. 0.89

Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard deviation of 1.00°C. A thermometer is randomly selected and tested. Draw a sketch and find the temperature reading corresponding to P34, the 84th percentile. This is the temperature reading separating the bottom 84% from the top 16%. Click to view page 1 of the table. Click to view page 2 of the table. Which graph represents P ? Choose the correct graph below. 84 A. В. OC. D. Ay X The temperature for P84 is approximately (Round to two decimal places as needed.)