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Question: Bottling cola A bottling company uses a filling machine to fill plastic bottles with cola. The bottles are supposed to contain 300 milliliters (ml). In fact, the contents vary according to a Normal distribution with mean μ = 298 ml and standard deviation σ = 3 ml.
(a) What is the probability that a randomly selected bottle contains less than 295 ml? Show your work.
(b) What is the probability that the mean contents of six randomly selected bottles are less than 295 ml? Show your work.
Defective calculator is 10%. If 10 calculators are selected at random, what is the probability that 4 or more of the calculators will be defective?
Suppose you were to collect data for each pair of variables. You want to make a scatterplot. Which variable would you use as the explanatory variable and which as the response variable? Why?
The Restaurants McBurger says that the waiting time for customers is 3 minutes with a standard deviation of population 1 minute. The quality control department found in a sample of 50 clients that the average waiting time was 2.75 minutes.
a researcher conducts a study of white and black attitudes toward the police in her community.the percentage of white
Is there any evidence to suggest that the mean weight of CubeSats scheduled for launch is different from 1? Assume the distribution is normal, s = 0.1, and use a = 0.05.
Suppose you want to estimate the proportion of students at your college who are left-handed. You decide to collect a random sample of 200 students.
Hanna Properties specializes in custom-home resales in the Equestrian Estates, an exclusive subdivision in Phoenix, Arizona. A random sample of nine custom homes currently listed for sale provided the following information on size and price.
Suppose there is an investigation to determine whether the increased availability of generic drugs, Internet drug purchases, and cost controls have reduced.
An accountant wants to estimate the average amount of an account of a service company. A random sample of 46 accounts yields x¯ = $16.50 and s = $2.20.
A candy bar manufacturer is interested in trying to estimate how sales are influenced by the price of their product. To do this, the company randomly chooses 6 small cities and offers the candy bar at different prices.
Which of these were visited by the Lewis and Clark Expedition?
question the average price of a gallon of unleaded regular gasoline was reported to be 3.13 in illinois. use this
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