To test the effectiveness of a business school preparation course, 8 students took a general business test before and after the
1 answer:
Answer: We should reject the null if the test statistic is greater than <u>1.895</u>.
Step-by-step explanation:
We assume the population to be normally distributed.
Given: Sample size : , which is asmall sample (n<30), so we use t-test.
We always reject the null hypothesis if the absolute t-value is greater than critical value.
Therefore, We should reject the null if the test statistic is greater than <u>1.895</u>.
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<h2>Answer:</h2><h2>The correct option is d. (i) and (ii)</h2>
Step-by-step explanation:
The total miles covered per day = 45
No of commuting days in a week = 5
Total miles in a week = 45 * 5 = 225
The total amount spent on gasoline = $ 38
Cost of gasoline per gallon = $ 2.48
The number of gallons consumed per week = = 15.32 gallons of gasoline per week.
This confirms (ii) statement
The amount spend on gasoline per mile = = $0.17
This confirms (i) statement
The number of miles per gallon of gasoline = = 14.68 miles
The statement (iii) is false.