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Question: (a) Samples of size 50 are being drawn from a company's production line. It has been found that x¯ = 119, and σ = 0.7. If a 95% confidence level is wanted, estimate the population mean and determine the confidence interval.
(b) Suppose in (a), the sample size has not yet been determined, but n should be chosen to have a 99% confidence level and an error of no more than 0.2. Estimate the sample size that should be used.
Prove or disprove the following statement. "For all integers b, c, and d, if x is a rational number such that x2 + bx + c = d, then x is an integer."
a manufacturer can produce cassette tape records at a cost of $40 a piece,its estimates that if the tape records are sold for p dollar a piece.consumer will buy 120-p of them a month , express the manufacturers monthly profit as a function of pric..
Assuming that the confidence level remains constant, what sample size is needed to reduce by half the margin of error of the confidence interval in part (a)?
Determine whether the following disputes are verbal, factual, or some combination of the two. If verbal, discuss whether the dispute arises from vagueness or ambiguity.
Write an equation for the number of cups you sell as a function of the price you charge. Denote "C" for number of cups, and "P" for the price you charge. Assume the function is linear
A random sample of 100 light bulbs has a mean lifetime of 3000 hours. Assume that the population standard deviation of the lifetime is 500 hours. Construct a 95% confidence interval estimate of the mean lifetime
Each batch costs the Paris Bakery $50 and can be sold for $100. The Paris Bakery can sell any unsold batches for $25 the next day.(a) Simulate 1 month (25 days) of operation to calculate the bakery's total monthly profit. Replicate this calculation N..
Using Polit2SetA dataset, run an ANOVA using Overall Satisfaction, Material Well-Being (satovrl) as the dependent variable and Housing Problems (hprobgrp) (this is the last variable in the dataset) as the Independent Variable.
A functional relationship between x and y such that y is a function of x is defined by a rule such that for every x there exists a unique y.Functions seem like they have a language of their own.
Suppose the demand for a product is given by D(p)= -7p+185. Calculate the elasticity of demand at a price of $11
what is the amount of depreciation during the fifth year?
The relative number N of gas molecules in a container that are moving at a velocity v can be shown to be
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