Because of the relatively high interest rates, most consumers attempt to pay off their credit card bills promptly. However, this is not always possible. An analysis of the amount of interest paid monthlyby a bank's Visa cardholders reveals that the amount is normally distributed with a mean of 27 dollars and a standard deviation of 8 dollars.Please use z-scores with at least 3 decimal places.A. What proportion of the bank's Visa cardholders pay more than 30 dollars in interest?Proportion =%3DB. What proportion of the bank's Visa cardholders pay more than 39 dollars in interest?Proportion =%3DC. What proportion of the bank's Visa cardholders pay less than 16 dollars in interest?Proportion =%3DD. What interest payment is exceeded by only 18% of the bank's Visa cardholders?Interest Payment =%3D

Let X be the random variable from normal distribution with mean (μ) = 27 dollars and standard…

Answered: Because of the relatively high interest…

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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If the weight (in pounds) of fish in my pond is normally distributed with mean 8 and standard deviation 2, what (to 2 decimal place accuracy) is the lowest possible weight for a fish in the top three percent in weight? You may use stattrek.org to calculate the answer. Group of answer choices
In the 2014 MLB season the Los Angeles Dodgers won 94 games and lost 68 to finish in first place in the National League Western Division. Over the 162 games of the regular season they scored an average of 4.43 runs per game, with a standard deviation of 2.88 runs per game. The distribution of their 162 run PERFORMANCES is roughly symmetric, unimodal, and bell-shaped. Stadium. Photo credit losangeles.dodgers.mlb.com bell chanedeurve and labelina t OOK TIKe by u ond mo mean (b) am Would score fowerL yumes would you exXpe (d) In what number of the games would you expect the Dodgers to score between 5.5 and 7.31 runs?
In the 1992 presidential election, Alaska's 40 election districts averaged 1824 votes per district for President Clinton. The standard deviation was 573. (There are only 40 election districts in Alaska.) The distribution of the votes per district for President Clinton was bell-shaped. Let X = number of votes for President Clinton for an election district. (Source: The World Almanac and Book of Facts) Round all answers except part e. to 4 decimal places.a. What is the distribution of X? X ~ N(,)b. Is 1824 a population mean or a sample mean? c. Find the probability that a randomly selected district had fewer than 1872 votes for President Clinton. d. Find the probability that a randomly selected district had between 1842 and 2091 votes for President Clinton. e. Find the first quartile for votes for President Clinton. Round your answer to the nearest whole number.
According to the U.S. Census, the average adult woman is the United States is 65 inches tall and the standard deviation is 3 inches. If Zsike is 67 inches tall, what is her z-score?
Engineers must consider the breadths of heads when designing helmets. The company researchers have determined that the population of potential clientele have head breadths that are normally distributed with a mean of 7 inches and a standard deviation of 1.4 inches. Due to financial constraints, the helmets will be designed to fit everyone except those with head breadths that are in the smallest 3.2% or largest 3.2%.Round you answer to one decimal place. What is the minimum head breadth that will fit the clientele? What is the maximum head breadth that will fit the clientele?
please answer asap
In the 2014 MLB season the Los Angeles Dodgers won 94 games and lost 68 to finish in first place in the National League Western Division. Over the 162 games of the regular season they scored an average of 4.43 runs per game, with a standard deviation of 2.88 runs per game. The distribution of their 162 run PERFORMANCES is roughly symmetric, unimodal, and bell-shaped. Dodger Stadium. Photo credit losangeles.dodgers.mlb.com Skete what this distIDUGIONS d mean + 3 SD. n fa a NO wat p In what number of their games would you expect the Dodgers to score fewer than 5.5 runs?
Jse the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 64 miles per hour, with a standard deviation of 4 miles per hour. Estimate the percent of vehicles whose speeds are between miles per hour and 72 miles per hour. (Assume the data set has a bell-shaped distribution.) Approximately % of vehicles travel between 56 miles per hour and 72 miles per hour.
The weights for newborn babies is approximately normally distributed with a mean of 6.1 pounds and a standard deviation of 1.8 pounds. Use the Cumulative Z-Score Table to answer the questions below. Write your answers rounded to the nearest whole number. Consider a group of 1200 newborn babies: • How many would you expect to weigh between 7.72 and 9.34 pounds? • How many would you expect to weigh less than 9.7 pounds? How many would you expect to weigh more than 6.37 pounds? How many would you expect to weigh between 6.1 and 7.54 pounds?
The ages of the employees at Solar Systems, Inc. is normally distributed with a mean of 32.7 years and a standard deviation of 1.8 years. What percentage of employees at Solar Systems, Inc. are younger than 30 years old? Round your answer to the nearest tenth of a percent.
The Internal Revenue Service reports that the mean federal income tax paid in the year 2010 was $8040. Assume that the standard deviation is $4900. The IRS plans to draw a sample of 1000 tax returns to study the effect of a new tax law. Do you think it would be unusual for an individual to pay a tax of less than $7800? Explain. Assume the variable is normally distributed. Round the answer to at least four decimal places.

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