The number of chocolate chips in an 18-ounce bag of Chips Ahoy! chocolatechip cookies is approximately normally distributed, with a mean of 1262 chipsand a standard deviation of 118 chips, according to a study by cadets of the U.SAir Force Academy.(a) Determine the 30th percentile for the number of chocolate chips in an18-ounce bag of Chips Ahoy! cookies.(b) Determine the number of chocolate chips in a bag of Chips Ahoy! that makeup the middle 98% of bags.(c) What is the interquartile range of the number of chips in Chips Ahoy!cookies?Click here to view the standard normal distribution table (page 1).Click here to view the standard normal distribution table (page 2).

Given Information: Mean μ=1262 Standard deviation σ=118

Answered: The number of chocolate chips in an…

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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Twenty-six percent of all automobiles undergoing an emissions inspection at a certain inspection station fail the inspection. Suppose 20 randomly selected cars are tested. Round all answers three decimal places. 1)Find the mean number of cars which will fail the inspection.2) Find the standard deviation of the number of cars that will fail the inspection.
A luxury furniture manufacture will make custom furniture for their customers. Pricing is based on the number of hours of skilled labor it takes to make a piece. The time it takes to make a custom couch is normally distributed with an average of 280 hours and a standard deviation of 40 hours. What percent of custom couches take 255 hours or less to make? How long would it take to build a couch that is in the 95th percentile?
Symbol Company Price ($) Yield AT&T 33.59 5.48% VZ Verizon 46.78 4.70% CVX Chevron 112.18 3.82% MCD McDonald's 93.70 3.63% PFE Pfizer 31.15 3.60% GE General Electric 25.27 3.48% MRK Merck 56.79 3.17% САТ Caterpillar 91.53 3.06% Хом ExxonMobil 92.45 2.99% ко Соса-Cola 42.22 2.89% If you selected two of these stocks at random, what is the probability that both the stocks in your selection had yields of 3.25% or more? (Enter your probability as a fraction.) Enter a fraction, integer, or exact decimal. Do not approximate.
A marketing researcher wants to estimate the mean amount spent per year ($) on a web site by membership member shoppers. Suppose a random sample of 100 membership member shoppers who recently made a purchase on the web site yielded a mean amount spent of $55 and a standard deviation of $52. Complete parts (a) and (b) below. a. Is there evidence that the population mean amount spent per year on the web site by membership member shoppers is different from $51? (Use a 0.01 level of significance.) State the null and alternative hypotheses. Ho: H (Type integers or decimals. Do not round. Do not include the $ symbol in your answer.) Identify the critical value(s). The critical value(s) is/are (Type an integer or a decimal. Round to two decimal places as needed. Use a comma to separate answers as needed.) Determine the test statistic. The test statistic, 1STAT, is (Type an integer or a decimal. Round to two decimal places as needed.) State the conclusion. Ho. There is evidence that the…
A study was conducted on the average commuting distance of students at College. The study found that the first sample of thirty students has an average commute of 23.1 miles with a sample standard deviation of 12.47 miles. The commuting mileages for a second sample of 30 students are below. a) Find the mean, median and mode for the second sample of students. b) Find the range, variance and standard deviation for the second sample students. c)
a-c
A marketing researcher wants to estimate the mean amount spent per year ($) on a web site by membership member shoppers. Suppose a random sample of 100 membership member shoppers who recently made a purchase on the web site yielded a mean amount spent of $58and a standard deviation of $55.Complete parts (a) and (b) below. a. Is there evidence that the population mean amount spent per year on the web site by membership member shoppers is different from $51? (Use a 0.01 level of significance.) State the null and alternative hypotheses.
According to one study, the average hours of sleep on a weeknight for men was 6.9 hours with a standard deviation of 1.5 hours. These hours are normally distributed. c. Find the proportion of men who sleep between 6-8 hours per night. d. Find the number of hours that represents the 90th percentile.
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