Instruction 8-1
A random sample of 100 stores from a large chain of 1,000 garden supply stores was selected to determine the average number of lawnmowers sold at an end-of-season clearance sale. The sample results indicated an average of 6 and a standard deviation of 2 lawnmowers sold. A 95% confidence interval (5.623 to 6.377) was established based on these results.
-Referring to Instruction 8-1,we do not know for sure whether the true population mean is between 5.623 and 6.377 lawnmowers sold.
Correct Answer:
Verified
Q2: Instruction 8-2
The managers of a company are
Q4: Instruction 8-1
A random sample of 100 stores
Q5: A population parameter is used to estimate
Q6: Instruction 8-1
A random sample of 100 stores
Q7: Instruction 8-3
A quality control engineer is interested
Q9: Instruction 8-2
The managers of a company are
Q10: The t distribution approaches the standardised normal
Q11: Instruction 8-1
A random sample of 100 stores
Q18: Other things being equal,the confidence interval for
Q23: Given a sample mean of 2.1 and
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