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A fast food outlet claims that the mean waiting time in line is less than 3.7 minutes. A random sample of 20 customers has a mean of 3.5 minutes with a standard deviation of 0.8 minute. if a = 0.05, test the fast food outlet's claim using P- values.
For the midcourse PSYC105 test M = 39 (out of 60) and SD = 11.2. What is the deviation score for a person scoring 33 in the test? Complete the formula and show your working and answer.
The data (in milliamps) are shown below. Using the .05 level of significance, are there any differences in the three categories.
Emma's On-the-Go, a large convenience store, has to decide where in the store to put its magazine rack. The manager at Emma's experiments with a selection of different locations, choosing a sample of days at each location.
A Myrtle Beach resort hotel has 120 rooms. In the spring months, hotel room occupancy is approximately 75%. What is the probability that at least half of the rooms are occupied on a given day?
Scores on a test have a mean of 73 and Q3 is 81. The scores have a distribution that is approximately normal. Find P90.
How is the rejection region defined and how is that related to the z-score and the p value? When do you reject or fail to reject the null hypothesis?
If we reandomly select 5 ball with replacement, what is the probability distribution of x-the number of red balls in the sample?
find the number of chocolate chips a cookie should contain on the average if it is desired that the probability of a
Number of rescue calls received by rescue squad in city follows a Poisson distribution with mu = 2.83 per day. Squad can handle at most four calls a day. Determine the probability that squad will be able to handle all calls on a particular day?
Find a linear function G(p) that gives the number of gallons sold as a function of the price of the milk.
a poll was conducted by making random phone calls to people in the united states. 3000 people called agreed to
cereal is sold by weight not volume. this introduces variability in the volume due to settling. as such the height to
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