Suppose that the distribution of typing speed in words per minute (wpm) for experienced typists using a new type of split keyboard can be approximated by a normal curve withmean 72 wpm and standard deviation 18 wpm.USE SALTWould you be surprised to find a typist in this population whose speed exceeded 126 wpm? (Round your numerical value to four decimal places.)It would --Select--- surprising to find a typist in this population whose speed exceeded 126 wpm because this probability isIwhich is ---Select--- V

The typing speed of words per minute for experienced typists using a new type of keyboard is…

Answered: Suppose that the distribution of typing…

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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Suppose that you have a set of data that has a mean of 34 and a standard deviation of 6. a) Is the point 28 above, below, or the same as the mean. How many standard deviations is 28 from the mean. b) Is the point 46 above, below, or the same as the mean. How many standard deviations is 46 from the mean. c) Is the point 43 above, below, or the same as the mean. How many standard deviations is 43 from the mean. d) Is the point 20 above, below, or the same as the mean. How many standard deviations is 20 from the mean.
Q.9. Calculate missing frequencies from the following when mean is 13-75. No. of students : 4 8 10 12 18 24 22 frequency : 13 11 9 8 10
1. Prove the following statements:a) The standard deviation is zero if all the observations have some constant value.b) The standard deviation does not change by the change of origin.c) The standard deviation is affected by the change of scale.
In a group of 10 workers, the wage of the lowest paid worker is Dollar 25 less than the average wage of others. Show that the standard deviation of wages is equal to 7.53?
Solve step by step in digital format Suppose that the average income of the engineers hired at REDUNO presents an approximately normal behavior with a mean of $17,000 pesos and a standard deviation of $3,000 pesos. a) What percentage of the employees will have incomes greater than $20,000 pesos?b) In a random sample of 50 employees, about how many people can be expected to have incomes of less than $15,000 pesos?
A weight-loss clinic advertised that last month its patients, on average, lost 6 lb. Assuming that average refers to the mean, which of the following claims must be true based on this information? Note: More than one statement could be true. If none of the statements is true, mark the appropriate box. Last month, the number of their clients who lost 6 lb or more was equal to the number of their clients who lost 6 lb or less. Last month at least one of their patients lost exactly 6 lb. Last month at least one of their patients lost less than 10 lb. Two months ago some of their patients lost at least 6 lb. Last month all of their patients lost 6 lb or more. None of the above statements are true. X Ś A 181 Aa ?
Kk.326.
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Solve step by step in digital format Suppose that the average income of the engineers hired at REDUNO presents an approximately normal behavior with a mean of $17,000and a standard deviation of $3,000 a) What percentage of the employees will have incomes greater than $20,000 ?b) In a random sample of 50 employees, about how many people can be expected to have incomes of less than $15,000 ?
Solve the following. Show the complete solution. 1. The daily income of bank auditors in SSS Commercial Bank is normally distributed with a mean ₱675 and a standard deviation of ₱50. What is the z value for the income X of a bank auditor who earns ₱750 daily? For an auditor who earns ₱550 daily? 2. The length of time needed for service a motorcycle at ETS Service Station is normally distributed with a mean of 6.5 minutes and standard deviation of 1.5 minutes. What is the probability that a randomly selected motorcycle will require more than 7 minutes of service or under 5.5.minutes of service?
Can someone explain the formulas used in these type of questions and where each number belongs in the formula The average size of a farm in Texas is 185 acres. The average size of a farm in Kansas is 220 acres. Assume that the data were obtained from two samples with standard deviations of 40 and 15 acres, respectively, and a sample size of 10 and 12, respectively. Can it be concluded with a=0.05 that the average size of the farms in the two states is different? Assume that the population is normally distributed.
Stoaches are fictional creatures, sometimes mistaken for mome raths. Suppose a two-tailed ? t -test is conducted to test for a difference between the population means of adult female stoach weights and adult male stoach weights. The female sample has 6 weights, and the male sample has 12 weights. The ? t -statistic for the test is -2.69933. What is the ? p -value? (Give your answer to 4 decimal places.)

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