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Conduct a marketing experiment in which students are to taste one of two different brands of soft drink. Their plan is to correctly identify the brand tasted. You select a random sample of 200 students and assume that the students have no ability to distinguish between the two brands.
A) What is the probability that the sample will have between 50% and 60% of the identification correct?
B) The probability is 90% that the sample percentage is contained within what symmetrical limits of the population percentage?
Formulate the hypotheses that can be used to determine whether the mean of all account balances is significantly different from $1,150
What is the standard deviation of the number of requests in a 10 hour work day? Give your answer to four decimal places.
Explain in your own words how to recognize a situation where you needed to use a two-sample test. Give a unique example of a two sample test for proportion or mean. Make sure to detail why only a two sample test would suffice.
Suppose that past data are not available for developing a planning value for p; therefore, you will use p = 0.050 for the planning average.
A vertical line is drawn through a normal distribution at z = -0.25, and separates the distribution into two sections. What proportion of the distribution is in the larger section?
The singer has the following variety of songs, in no particular order: 7 relationship songs, 6 songs about people, 4 reflective songs, and 4 songs about places.
Chosen field within a year after graduation. Find the probability that 11 randomly selected graduates all find jobs in their chosen field within a year of graduating.
When modelling E(y) with single qualitative independent variable, number of 0 - 1 dummy variables in model is equal to number of levels of qualitative variable.
Six groups of randomly selected students matched for IQ and age were formed. Each student was taught a concept of time by using one of three methods: Lecture, demonstration
Normal adult Mean Temperature is 98.2 and standard deviant is 0.62 with normal distribution. If 16 people are randomly selected determine the probability that their mean body temp is below 98.5 degrees.
Steve then conducts a one-sample t-test on the data, knowing that there is an established mean for the publication of others that have taken this test of 6.
One shipment is chosen at random and a pair of slacks randomly selected. It is a pair of women's slacks. What is the probability it came from shipment 1?
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