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When the variable x has a normally distributed mean of 89 and a standard deviation of 5, what is the probability rounded to 4 decimal places?
P(73<x<81)=
A population of values has a normal distribution with µ=128.4 and s=13.7 You intend to draw a random sample of size n=165
The amount ($1.00, $5.00, $10.00, $25.00, or $50.00) promised to each person was determined by randomization. For each person who was sent one of the surveys, The value of the X2 test statistic for testing the hypothesis
repair costs computers in a random sample of 11 computers the mean repair cost was 127.50 and the standard deviation
find the indicated quantities given that x is a normal random variable with a mean of 30 and a standard deviation of
A researcher determines that x2= 3.76 to test for significance for a phi correlation coefficient. What was the decision for this phi correlation test?
for each of the following find the probability for the given normal distirbutiona. p x gt 4 if x - n 5 52b. p x lt 2
Fitting of simple linear equation - Prepare an equation showing how daily sales are related to number of customers per day.
the mean amount of gasoline and services charged by key refining company credit customers is 74 per month. the
A casino knows that people play the slot machines in hopes of hitting the jackpot, but that most of them lose their dollar. Suppose a certain machine
The population standard deviation can be assumed known as .24. What is the 95% confidence interval estimate of the mean undergraduate GPA for students admitted to the top graduate business schools.
The target temperature for a hot beverage the moment it is dispensed from a vending machine is 170°F. A sample of ten randomly selected servings.
"Correlation does not imply causation" is a phrase that emphasizes that correlation between two variables does not automatically imply that one causes the other
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