Statistics Quiz

The mean gasoline consumption of 10 cars is 28 liters with a standard deviation of 1.6 liters.find the point and interval estimates using 95% confidence level. What is ∝?

• 0.05

• 0.5

The mean gasoline consumption of 10 cars is 28 liters with a standard deviation of 1.6 liters.find the point and interval estimates using 95% confidence level.What is the point estimate of μ?

• 10

• 28

• 1.6

Which of the following symbols stands for "population standard deviation?

• μ

• S²

• σ

Subset of population are called:

• Samples

• Elements

• Estimates

Which of the following are the 95% confidence coefficient?

• ±1.645

• ±2.58

• ±1.96

The is a range of values that contains the parameter value?

• Confidence level

• Confidence Interval

• Confidence Coefficient

Which of the following illustrates confidence level?

• 32.8

• 30-39

• 90%

What do you call a single value that may refer to a parameter value?

• T statistic

• Z statistic

• Point Estimate

When n<30 and the population standard deviation is unknown ,what is the appropriate distribution?

• z distribution

• t distribution

• x distribution

When n≥30 and the population standard deviation is known ,what is the appropriate distribution?

• z distribution

• t distribution

• x distribution