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Troyanec [42]
3 years ago
14

The CEO of a large company claims that 85% of customers are repeat customers. They define a repeat customer as someone who makes

more than one purchase per month. A random sample of 200 customers shows that 162 are repeat customers. Do these data provide convincing evidence at the 5% significance level that less than 85% of customers of this company are repeat customers?
If needed, use the z-table to answer the question.

What is the value of the test statistic? (Round to 2 decimal places.)


What is the P-value of the test? (Enter 4 decimal places.)
Mathematics
1 answer:
Agata [3.3K]3 years ago
3 0

Answer:

-1.58

0.0571

Got it right on edge:)

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Evaluate Ic2 + b2l, given a = 5, b = -3, and c= -2.
LenKa [72]

Answer:

Ic² + b²l = 13 units.

Step-by-step explanation:

We have to evaluate the expression Ic² + b²l with unknowns b and c and having the values of b and c respectively - 3 and - 2.

Now, Ic² + b²l

= I(- 2)² + (- 3)²l {Putting the values of b and c}

= I4 + 9l  

= I13l

= 13 units.

Therefore, Ic² + b²l = 13 units. (Answer)

5 0
3 years ago
Derek is 6.5 feet tall and casts a shadow that is 10 feet long. If a basket ball hoop next to Derek is 10 feet tall, how long is
son4ous [18]

Answer:

14.5 feet tall.

Step-by-step explanation:

the shadow increase by 4.5 per inch in height

3 0
3 years ago
100 Freebie points!!! YW Nerds
blondinia [14]
Thanks for the points.
8 0
2 years ago
Read 2 more answers
Ben weighs 140.8 pounds, and Jennifer weighs 117.7 pounds. How many more pounds does Ben weigh than Jennifer?
DENIUS [597]

Answer:

Ben weighs 23.1 lbs more than Jennifer.

Step-by-step explanation:

To find the difference between Ben and Jennifer's weight, you have to subtract the smaller number from the bigger number. In this case, subtract Jennifer's weight from Ben's weight. This would look like this: 140.8-117.8.

140.8-117.7=23.1

Therefore, Ben weighs 23.1 lbs more than Jennifer.

8 0
3 years ago
Im lost please help me
zepelin [54]
Let C = the Chinese books.
Let E = the English language books.

C = 4/5 E

E - 300 = C - 180 Notice how you get this equation. You take 300 away from the English books and 180 from the Chinese and according to the question, you get an equal number of both. Put c = 4/5E into the second equation.

E - 300 = 4/5 E - 180 Add 300 to both sides.
E = 4/5 E - 180 + 300
E = 4/5 E + 120 Now subtract 4/5 E from both sidies.
E - 4/5 E = 120
1/5 E = 120 Now multiply by 5
E = 120 * 5
E = 600

So the number of books are
600 written in English
4/5 of 600 = 2400 /5 = 480 Chinese books.

English 600
Chinese 480
6 0
3 years ago
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