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The Toyota Corporation developed the Scion car to appeal to its younger consumers. Toyota claims that...

The Toyota Corporation developed the Scion car to appeal to its younger consumers. Toyota claims that the average age for the Scion driver is 26 years. Suppose a random sample of 18 drivers was drawn and it was found that the average age for the drivers is 27.5 years. Assume the standard deviation for the age of the drivers is 2.3 years. Use a 95% confidence interval to estimate the average to estimate the average age of the Scion driver. Check all that apply.

Question 6 options:

The standard error for the mean is 0.542.

The population must be normally distributed.

The Upper confidence level is 26.44 years.

The sample supports Toyota's claims that the average age of a Scion driver is 26 years.

The Upper confidence level is 28.56 years.

The sample does NOT support Toyota's claims that the average age of a Scion driver is 26 years.

math   Statistics-And-Probability   
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