An article in the san jose mercury news stated that students in the california state university system take 4.5 years, on average, to finish their undergraduate degrees. suppose you believe that the mean time is longer. you conduct a survey of 49 students and obtain a sample mean of 5.1 with a sample standard deviation of 1.2. do the data support your claim at the 1% level?

No, the data does not support the claim at 1% level as the mean time is no longer than 4.5 years.

Step-by-step explanation:

Since we have given that

n the California state university system take 4.5 years, on average, to finish their undergraduate degrees.

So, the hypothesis would be

Mean = 5.1

Standard deviation = 1.2

n = 49

So, test statistic value would be

At 1% level of significance, critical value is 2.58

Since 2.58>-3.53.

So, we will accept the null hypothesis.

Hence, No, the data does not support the claim at 1% level as the mean time is no longer than 4.5 years.

first, we define the variables:

x: number of years after 1950

f (x): amount of vinyl sold.

then, with the variables defined, we have:

68594 vinyl records were sold in 1958 > f (8) = 68594

91299 vinyl records were sold in 1961 > f (11) = 91299

38720 vinyl records were sold in 1952 > f (2) = 38720

161743 vinyl records were sold in 1967 > f (17) = 161743

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step-by-step explanation:

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