Mathematics, 20.11.2019 23:31 arielgonzalez809
Customers at costco spend an average of $130 per trip (the wall street journal, october 6, 2010). one of costco's rivals would like to determine whether its customers spend more per trip. a survey of the receipts of 25 customers found that the sample mean was $135.25. assume that the population standard deviation is $10.50 and that spending follows a normal distribution. use standard normal curve area table. a,specify the appropriate null and alternative hypotheses to test whether average spending at the rivals store is more than $130.b. calculate the value of the test statistic. c.calculate the p-value. d. calculate the critical value
Answers: 1
Answer from: Quest
the first one
step-by-step explanation:
just id the test.
Answer from: Quest
b. y = 4x - 2
step-by-step explanation:
to find a parallel equation to an equation, make sure both equations have the same slope but different y-intercepts.
y = 4x + 1
4 = slope
1 = y-intercept
y = 4x - 2
4 = slope
-2 = y-intercept
they both have the same slope but different y-intercepts, so, b. is the correct answer.
and to check your work, you can graph both equations. : )
Answer from: Quest
the answer is b
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Customers at costco spend an average of $130 per trip (the wall street journal, october 6, 2010). on...
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