C18. Mr. Yates picked up a dozen items in the grocery store with a mean cost of $3.25. Then he added an apple pie for $6.50. The new mean for all 13 items is $3.00 $3.50 a. b. C $3.75 d. $4.88 e. None of the above
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
![12
C 18. Mr. Yates picked up a dozen items in the grocery store with a mean cost of $3.25. Then he added ar
apple pie for $6.50. The new mean for all 13 items is
$3.00
a.
b.
$3.50
C $3.75
d.
$4.88
e.
None of the above
19. The five-number summary for scores on a statistics exam is 11, 35, 61, 70, 79. In all, 380 students
took the test. About how many had scores between 35 and 61?
a. 26
b.
76
с.
95
d.
190
e.
None of these
20. The mean age (at inauguration) of all U.S. Presidents is approximately Normally distributed with a
mean of 54.6. Barack Obama was 47 when he was inaugurated, which is the 11th percentile of the
distribution. Which of the following is closest to the standard deviation of presidents' ages?
a.
-9.20
b.
-6.18
6.18
с.
d. 7.60
e.
9.20
21. In 1965, the mean price of a new car was $2,650 and the standard deviation was $1000. In 2011, the
mean was $30,500 and the standard deviation was $9000. If a Ford Mustang cost $2300 in 1965
and $28,000 in 2011, in which year was it more expensive relative to other cars?
1965, because the standard score is higher than in 2011.
a.
in 2011](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F02c99683-a01b-4e64-96f8-7137fedec6c4%2Fcdecc590-6aea-4312-9107-4bdd5586b2aa%2Fth3svde_processed.jpeg&w=3840&q=75)
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