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Consider H0: μ = 28 versus H1: μ ≠ 28. A random sample of 16 observations taken from this population produced a sample mean of 23.25. The population is normally distributed with σ = 9.
(a) Compute σx¯.
Round the answer to four decimal places.
σx¯=
(b) Compute z value. Round the answer to two decimal places.
z =
(c) Find area to the left of z-value on the standard normal distribution. Round the answer to four decimal places.
The area =
(d) Find p-value. Round the answer to four decimal places.
p-value =
My question bout How do I use the TINV function within excel to back out the t-statistic for the test? Why did you use the TDIST function? I know ho to use the TINV function, but what does it mean to back out the t-statistic for the test?
A psychologist believed that as children get older, they engage in more "inactive activities" such as playing computer games, watching TV, and surfing online.
A least squares linear trend line is just a simple regression line with the independent variable being time (months or years for example).
The reader should refer to the examples in each chapter for details on how to implement these in actual practice using JMP. Was the design a CRD?
the regression equation between years of employment x and discount amount y at the happy cafeteria is given byy 3x
If a random sample of 40 customers is taken, what is the probability that the sample average expenditure per customer for this sample will be 87.00 or more?
The early twentieth century is often described as the lowest point in the history of race relations in the United States.
an elementary school is offering 3 language classes one in spanish one in french and one in german. these classes are
a local pizzeria wants to know how much the average cost of an order is during lunchtime on wednesdays. they collected
Lets say 500 appointment mapping requests are received, 197 of which were mapped to an office visit. Calculate a 90% confidence interval for the population
Twenty-one individuals from a rural Midwestern town took a multiple-choice test that asked about historical events, science, art, literature
Solve using the quadratic formula: Radicands must be enclosed within
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