What is y=-x+3 y=-7x-3 A.) (-4,-4) B.) (-4,4) C.) (4,-2) D.) (-1, 4)

A pizza place recently hired additional drivers and as a result now claims that its average delivery time for orders is under 44

Burka [1]

Answer:

Yes, this sample provide enough evidence to support the delivery time claim made by the pizza place.

Step-by-step explanation:

We are given that a pizza place recently hired additional drivers and as a result now claims that its average delivery time for orders is under 44 minutes.

A sample of 39 customer deliveries was examined, and the average delivery time was found to be 40.5 minutes. Historically, the standard deviation for delivery time is 11.3 minutes.

From this, X bar = 40.5 , $\sigma$ = 11.3 , $\mu$ = 44 and sample, n = 39

Null Hypothesis, $H_0$ : $\mu$ >= 44

Alternate Hypothesis, $H_1$ : $\mu$ < 44

The test statistics used here will be;

T.S. = $\frac{Xbar-\mu}{\frac{\sigma}{\sqrt{n} } }$ ~ N(0,1)

So, Test statistics = $\frac{40.5-44}{\frac{11.3}{\sqrt{39} } }$ = -1.93

Now, at 5% significance level the z score table gives critical value of -1.6449 as it is one-tail test.

Since our test statistics is less than the critical value as -1.93 < -1.6449, so we have sufficient evidence to reject null hypothesis and conclude that the average delivery time for orders is under 44 minutes.

7 0

4 years ago

3/4 + 1/6z = 35/4 solve

Kruka [31]

Z=48 hope this helps

6 0

3 years ago

Read 2 more answers

Bri and Annamarie are picking strawberries at two different strawberry farms that charge a flat fee plus a cost per basket picke

denpristay [2]

The correct answer is a & d.
If you find the equation for Annamarie, you get y = 2.75x+ 11.

Using the slope formula to find what Annamarie pays per basket.
(38.5 - 11)/(10 - 0) = 2.75
Annamarie's flat fee is $11 and Bri's flat fee is $5.50

6 0

3 years ago

Read 2 more answers

Which of the following functions has an amplitude of 5 and passes through the point (0,0)?

dlinn [17]

Im gonna need to know what the choices are

5 0

3 years ago

Clarissa works in sales for a software company. Her pay each month varies, because each month she receives a base pay of $2,400.

Natasha_Volkova [10]

If Clarissa had $18,000 in sales during the month of November, and she earns an 8% commission on the dollar value of her sales, then we first need to find out how much she made on commissions alone for the month of November. We can do that by multiplying the percentage by the amount of money she made off of sales.

To do this, we first must convert the percentage into a decimal. We can do this by either dividing the percent by 100, or (my personal shortcut) just shifting the decimal point over 2 places to the left.

8% = 0.08

Now, we multiply the decimal by the amount she made

0.08 * 18000 = 1440

So Clarissa made $1,440 off of commissions. But that's not what the question is asking. It wants to know what percentage of Clarissa's income for the month of November was from commissions. We can do this by adding her base pay to the amount she made from commissions, and then dividing the amount she got from commissions by the total amount she made for the month of November.

2400 + 1440 = 3840

1440 / 2840 = 0.375

We can convert this decimal back to a fraction by multiplying by 100

0.375 = 37.5%

37.5% of Clarissa's pay for the month of November was from commissions.
Hope that helped =)

5 0

3 years ago