0 Question 2 v The physical plant at the main campus of a large state university recieves daily requests to replace orecent lightbulbs. The distribution of the number of daily requests is bell-shaped and has a mean of 58 and a standard deviation of 10. Using the 68-95-99.7 rule, what is the approximate percentage of lightbulb replacement requests numbering between 38 and 58? Do not enter the percent symbol. Question Help: El Video Submit Question The graph illustrates a normal distribution for the prices paid for a particular model of HD television. The mean price paid is $1600 and the standard deviation is $90. Use the Empirical Rule (68-95-99.7% rule) to answer the following questions. 1330 I420 I510 I600 I690 I780 1870 Distribution of Prices q What is the approximate percentage of buyers who paid between $1510 and $1690? :96 What is the approximate percentage of buyers who paid between $1420 and $1600? :]% What is the approximate percentage of buyers who paid more than $1870? :1% What is the approximate percentage of buyers who paid less than $1420? :]% What is the approximate percentage of buyers who paid between $1510 and $1600? :96 What is the approximate percentage of buyers who paid between $1330 and $1600? :]% . Question 5 GPAs at CCSU are normally distributed with a mean of 2.31 and a standard deviation of 0.46. Find the z-score for a GPA of 2.59. O 1.761 O 2.022 O 0.6087 O 0.8043 O 1.130 0.7609 Submit Question. Question 6 Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the z-score of a man 71.6 inches tall. (to 2 decimal places) Submit Question.Question7 v On a nationwide math test. the mean was 66 and the standard deviation was 4. If Roberto scored 90, what was his z-score? . Question 8 For a standard normal distribution, find: P(z -1.83) Question Help: DVideo 1 D Video 2 Submit Question0 Question 12 v The heights of adult men in America are normally distributed, with a mean of 69.5 inches and a standard deviation of 2.62 inches. The heights of adult women in America are also normally distributed, but with a mean of 64.4 inches and a standard deviation of 2.56 inches. a) lfa man is 6 feet 3 inches tall, what is his z-score (to two decimal places)? b) What percentage of men are SHORTER than 6 feet 3 inches? Round to nearest tenth of a percent. :l% c) lfa woman is 5 feet 11 inches tall, what is her zscore (to two decimal places)? d) What percentage of women are TALLER than 5 feet 11 inches? Round to nearest tenth of a percent. :l% e) Who is relatively taller: a 6'3" American man or a 5'1 1" American woman? Defend your choice in a meaningful sentence. 0 Question 13 v In the country of United States of Heightlandia, the height measurements of ten-yearold children are approximately normally distributed with a mean of 55 inches, and standard deviation of 6.5 inches. A) What is the probability that a randomly chosen child has a height of less than 42.95 inches? Answer=:] (Round your answer to 3 decimal places.) B) What is the probability that a randomly chosen child has a height of more than 66.1 inches? Answer=:] (Round your answer to 3 decimal places.) 0 Question 14 v Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean of 0C and a standard deviation of 1 .00C. A single thermometer is randomly selected and tested. Find P59, the 69-percentile. This is the temperature reading separating the bottom 69% from the top 31%. 0 Question 15 v A manufacturer knows that their items have a normally distributed lifespan, with a mean of 13.8 years, and standard deviation of 4.4 years. The 9% of items with the shortest lifespan will last less than how many years? Give your answer to one decimal place. :l Question Help: El Video Submit