Question

nutra/courses/_498545804_1/ct/outline 1) - Unit 114 Hypothesis Test for Mean Population Standard Deviation Unknown Critical Value Approach Understand the assumptions and conditions for using the best for hypothesis testing and compute the value of the test statistic Question If a hypothesis test were to be performed, in which of the following contexts would a t-test be appropriate? Select the correct answer below. A sample mean of 30 pounds and a standard deviation of pounds are obtained using a simple random sample of 13 mountain bikes from the most popular bicycles offered by major retailers having approximately normally distributed weights. The population standard deviation is 16 pounds. O A sample mean of 3 and sample standard deviation of 6 are obtained using a simple random sample of size 15 from a normally distributed population O A Sample mean of 18 miles per gallon is obtained using a simple random sample of the fuel consumption rates of 23 vehicles from a large group of vehicles. The population standard deviation is known to be 2 miles per gallon. O A convenience sample of 24 individuals is taken from the residents of a city with approximately normally distributed commute times. The sample means in minutes and the population standard deviation is 2 minutes. FEEDBACK MORE INSTRUCTION SUBMIT JARIBOEDEEL

Answer 1

Solution.

We will use t distribution that if we have normal simple and papulation standard deviations is unknown

A convenience simple of 24 individual is Taken from the residents of city with approximately normally distributed communit time the simple mean 28 minutes and papulation standard deviations is 2 minutes.

Option (d) correct .

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