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statuscvo [17]
3 years ago
10

A pizza delivery chain advertises that it will deliver your pizza in 30 minutes from when the order is placed. Being a skeptic,

you decide to test and see if the mean delivery time is actually more than 30 minutes. For the simple random sample of 9 customers who record the amount of time it takes for each of their pizzas to be delivered, the mean is 35.4 minutes with a standard deviation of 7.6 minutes. Assume that the population distribution is approximately normal.
Required:
a. Perform a hypothesis test using a 0.05 level of significance.
b. State the null and alternative hypotheses for the test.
Mathematics
1 answer:
svp [43]3 years ago
3 0

Answer: B

Step-by-step explanation: So that you know you are only getting the best for what YOU PAID for.

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Data show that men who are married, and also divorced or widowed men, earn quite a bit more than men the same age who have never
lozanna [386]

Answer:

Work ethic, is a lurking variable, because the work ethic i.e the number of hours worked overtime of single men is often less, while the length of breaks is often more compared to married, divorced or widowed men.

Step-by-step explanation:

In to gain a better understanding of the above answer we need to known that

Men who are married, widowed, or divorced are usually more committed both in their personal and professional lives because of the responsibility of not only taking care of them self but their family, enabling them to succeed in their careers.

4 0
3 years ago
PLEASE ANSWER PLEASEE!!!!!!!
Montano1993 [528]

Answer:

they would both be 61°

Step-by-step explanation:

when the angles make out a straight line it equals to 180 and 180 subtracted to 119 comes out to 61 and both b and c are vertical angles which would make them congruent

4 0
3 years ago
Read 2 more answers
The tiger at the zoo ate 133 pounds of food in 7 days find the average change in the zoos tiger food supply each day
vfiekz [6]

Which describes the effect of the transformations on the graph of ƒ(x) = x2 when changed to ƒ(x) = 3(x + 2)2 − 4?

A) stretched vertically, shifted left 2 units, and shifted down 4 units  

B) stretched vertically, shifted right 2 units, and shifted up 4 units  

C) compressed vertically, shifted left 2 units, and shifted down 4 units  

Eliminate

D) compressed vertically, shifted right 2 units, and shifted up 4 units

5 0
3 years ago
You’ve written your first novel and, like many first-time authors, can’t find a publisher. So you’ve decided to self-publish you
Over [174]
P(x) = 4x + 1550 <== ur function

selling only 50 copies...
P(50) = 4(50) + 1550
P(50) = 200 + 1550
P(50) = 1750....so the printing cost for 50 copies is 1750

1750 = 50x....x = cost of each book
1750/50 = x
35 = x.......u would have to sell each book for $ 35 <===
5 0
3 years ago
What is the area of the composite figure?<br> (Attached picture)<br><br> __cm²
lara31 [8.8K]

Answer:

59.5

Step-by-step explanation:

area of the triangle is (7 x 3)/2=21/2=10.5

area of the square 7x7=49

7 0
3 years ago
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