Answer:
$16
Step-by-step explanation:
add 65 to 15 to get 80.
80 ÷ 5 = 16.
Answer:
20:1
Step-by-step explanation:
every 20 dollar she spends she save 1 dollar
Answer: The value of test statistic is 2.442.
Step-by-step explanation:
Since we have given that
n = 238
Sample mean = 23.2 minutes
Standard deviation = 20.26 minutes
Hypothesis :

So, the test statistic value would be

Hence, the value of test statistic is 2.442.