A meteorological office keeps records of the annual precipitation in different cities. For one city, the mean annual precipitation is 25.2 inches and the standard deviation of the annual precipitation amounts is 5.2. Let \( x \) represent the annual precipitation in that city. Determine the z-score for an annual precipitation in that city of 39.3 inches. Round your answer to two decimal places.Options:- ○ 12.74- ○ -2.71- ○ 2.71- ○ 1.41 There is no graph or diagram accompanying this problem. This is a multiple-choice question aimed at calculating the z-score, which measures how many standard deviations an element is from the mean.

The z score indicates how many standard deviations that a data points away from the mean. It can be…

Answered: A meteorological office keeps records…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Alexander Borbely is a professor at the University of Zurich Medical School, where he is director of the sleep laboratory. The histogram in the figure below is based on information from his book Secrets of Sleep. The histogram displays hours of sleep per day for a random sample of 200 subjects. Estimate the mean hours of sleep, standard deviation of hours of sleep and coefficient of variation. (Enter mean to 1 decimal place, s and CV to 2 decimal places.)
The following frequency histogram represents the IQ scores of a random sample of seventh-grade students. IQs are measured to the nearest whole number. The frequency of each class is labeled above each rectangle. Use the histogram to answers parts (a) through (g). 1 OA. 150-160 B. 155 OC. 60-69 OD. 150-159 M (f) What percent of students had an IQ of at least 120? % (Type an integer or a decimal. Do not round.) (g) Did any students have an IQ of 164? OA. Yes, because there is a frequency of a score of 165. OB. Yes, because there is a bar in the 150-159 class. C. No, because there is a bar in the 150-159 class. OD. No, because there are no bars, or frequencies, greater than an IQ of 160. Frequency 80- 60- 40- 20- IQs of 7th Grade Students 12 44 57 43 29 7 2 3 2 + 60 70 80 90 100 110 120 130 140 150 160
The accompanying histogram is for pulse rates for 125 people. Convert the vertical axis to relative frequency and shows the values that would replace each of the values on the vertical axis.
c. Identify the mean and standard deviation of x. Choose the correct answer below. O A. µ and О В. н аnd o C. and O D. and o 이들
A California lake has been stocked with rainbow trout. These trout have an average length of 24 inches, with a standard deviation of 3 inches. Someone goes fishing and catches a trout that is 26.25 inches long. Express the length of this trout in standard units, relative to all the trout that were used to stock the lake. Choose the answer below that is closest.
Last weekend, police ticketed 16 motorists from Edmonton whose mean speed was 116 kilometres per hour (kph), and 34 motorists from Calgary going an average of 120 kph. Overall, what was the mean speed of all the people ticketed? Answer: (Please round your answer to 2 decimal places.)
A recent Nielsen analysis found that the typical U.S. smartphone user is spending an average of 220 minutes per day using apps. We speculate that the average time spent using apps for Generation X smartphone users (aged 41-56 years) is less than the national average. The hypotheses are Ho: H = 220 minutes versus Ha: µ < 220 minutes. Summary results from R are provided. Summary Statistics Std. Dev (s) Mean Sample Size (n) 205 minutes 63.25 minutes 31
Please see attached.
Assume that adults have IQ scores that are normally distributed with a mean of u= 105 and a standard deviation o = 15. Find the probability that a randomly selected adult has an IQ between 91 and 119. Click to view page 1 of the table. Click to view page 2 of the table. ces The probability that a randomly selected adult has an IQ between 91 and 119 is (Type an integer or decimal rounded to four decimal places as needed.) Exp The use
The amount of caffeine in a sample of five-ounce servings of brewed coffee is shown in the histogram. Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample standard deviation of the data set. Click the icon to view the histogram. Complete the table. Round values to the nearest tenth as needed. Graph/chart f Midpoint x xf 70.5 Ay 30- 92.5 26 25- 114.5 136.5 20- 158.5 15- 12 Ef = Exf = 10- Find the mean of the data set. 5- X = (Round to the nearest tenth as needed.) 48.5 70.5 92.5 114.5 136.5 158.5 Complete the table. Round values to the nearest tenth as needed. Midpoint x (x-x)? (x-x)?f X-X 70.5 Print Done 92.5 114.5 136.5 158.5 (x-x)?r= ] of
State the generic error for an interpolating formula?
The Ahmadi Corporation wants to increase the productivity of its line workers. Four different programs have been suggested to help increase productivity. Twenty employees, making up a sample, have been randomly assigned to one of the four programs and their output for a day's work has been recorded. You are given the results below. At 95% confidence, conduct the ANOVA test to determine whether there is a significant difference in the mean output under the four programs. Program A Program B Program C Program D 150 150 185 175 130 120 120 135 180 160 145 110 Part of the ANOVA table is shown below. Source of Variation Sum of Squares 8,750 Between Groups Within Groups 16,350 Total 220 190 180 175 d.f. 19 150 120 130 175 Mean Square

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