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A shipment of 100 cereal boxes is delivered to a grocery shop. The manager is told that the weights of cereal boxes are normally distributed, with a mean of 165g and a standard deviation of 5g.
What is the probability that a box randomly selected for checking has a weight between 100 and 164 grams?
Let"s consider the very large database of individual incomes from the Bureau of Labor Statistics as our population. It is strongly right skewed. How large a sample size?
If someone had x=2 job changes, what does the least squares line predict for y, the annual salary?
In a normal distribution
The owner of a restaurant serving Continental-style entrees has the business objective of learning more about patterns of patron demand for the Friday to Sunday weekend time period.
question samples of n 5 units are taken from a process every hour. the xoline and r values for a particular quality
Surface area of a cube. The formula A=6V^2/3 gives the surface area of a cube in terms of its volume V. What is the volume of a cube with surface area 12 square feet?
Marconi Shipping Company packages their shipments in 50 ton containers. History has shown that the shipping department reports that the distribution of container weights follows the normal distribution
General Discrete Random Variable
A random sample of 51 observations was selected from a normally distributed population. The sample mean was = 88.6, and the sample variance was s2 = 38.2.
Two marbles are selected, one at a time from a jar of marbles containing 10 black, 10 brown, 10 white and 10 green marbles. Let x represent the number of white marbles selected in 2 separate selections from the jar.
If code is 4 random letters, and letters can be utilized multiple times, how many different possible codes are there?
Assume that the population is normally distributed. Can we conclude, at the level of significance, that the mean lifetime of light bulbs made by this manufacturer differs from months?
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