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Average length of trout caught in Swanson lake is u=19.For a random sample of 51 fish caught the mean length was xbar=18.5 inches with estimated standard deviation s=3.2 inches. Do these data indicate that the average length of trout caught in Swanson lake is less than u=19 inches? Use the level of significance a=0.05
Dr Johnson wants to know if there is sufficient evidence to conclude that the grade distribution of his class is different than the historical grade distribution.
An average computer mouse inspector can inspect 60 mice per hour with a population standardx deviation of 10 mice per hour. The 48 computer mice inspectors at a particular factory can only inspect 55 mice per hour. Does the company have reaseon to..
A hypothesis states a difference exists between two populations. Sometimes this is an obvious conclusion because the means will be very different.
Out of forty students, 14 are taking English Composition and 29 are taking Chemistry. If five students are in both classes, how many students are in neither class? How many are ineither class?
Sampling seventy-two percent of americans squeeze their toothpaste tube from the top. This and other not so serious finding are included in The first really important survey of american habits.
Due to financial hardship, the Nyke shoe company feels they only need to make one size of shoes, regardless of gender or height. They have collected data on gender, shoe size, and height
Explain why one would expect to find a positive correlation between the number of fire engines that respond to a fire and the amount of damage done in the fire. Does this mean that the damage would be less extensive if fewer fire engines were disp..
Compute the variance and standard deviation
Find out the value of test statistic utilizing one sample proportion testing. Use the subsequent information for the below questions.
What is the point estimate of the proportion of the population of employees who strongly dislike their current work experience (to 2 decimals)?
In our discussions of basic probability theory the concepts of mutually exclusive events and independent events share prominent roles.
According to the U.S. Bureau of the Census, 75% of adults regularly drank alcohol in 1985. An investigator predicts that fewer adults drink now than drank then.
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