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Alina [70]
3 years ago
14

PLS I REALLY NEED AN AWNSER

Mathematics
1 answer:
Pepsi [2]3 years ago
7 0
Addd each pair up, whciver equals 90, is it, I think.
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In a study of the accuracy of fast food​ drive-through orders, Restaurant A had 295 accurate orders and 55 that were not accurat
Afina-wow [57]

Answer: (a)  14.5\%

(b) Restaurant B has a significantly lower percentage of orders that are not accurate.

Step-by-step explanation:

Confidence interval for population proportion is given by :-

\hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

Given: Significance level : \alpha: 1-0.95=0.05

Critical value : z_{\alpha/2}=1.96

For Restaurant A , The proportion of orders not accurate : p=\dfrac{55}{295}\approx0.19

Then , the Confidence interval for population proportion will be :-

0.19\pm (1.96)\sqrt{\dfrac{0.19(1-0.19)}{295}}\\\\=0.19\pm0.045=(0.145,0.235)=(14.5\%,23.5\%)\\\\\text{i.e.}14.5\%

Also, 95​% confidence interval for the percentage of orders that are not accurate at Restaurant​ B:0.138

By comparing both the lower confidence limit and upper confidence limit of the interval for Restaurant B is lower than the lower confidence limit of t and the upper confidence limit of the interval for Restaurant A.

Therefore, Restaurant B has a significantly lower percentage of orders that are not accurate.

3 0
3 years ago
Sydney's car used 1/ 3/5
sleet_krkn [62]

Answer:

Sydney car can go 44.4 miles on gallon

5 0
3 years ago
What's the formula to find GP?​
frosja888 [35]

Answer:

The general form of a GP is a, ar, ar2, ar3 and so on. The nth term of a GP series is Tn = arn-1, where a = first term and r = common ratio = Tn/Tn-1) . The sum of infinite terms of a GP series S∞= a/(1-r) where 0< r<1. If a is the first term, r is the common ratio of a finite G.P.

hope helps

6 0
4 years ago
Read 2 more answers
With the process<br>opt maths​
Anastaziya [24]

Answer:

<h2>Explanation is in the attachment </h2>

Step-by-step explanation:

<h3>Hope it is helpful to you ☺️</h3>

6 0
3 years ago
What is the missing coefficient of the x-term of the product (-x-5)² after it has been simplified?
Mice21 [21]

The missing coefficient of the x-term after finding the product of (-x - 5)², is: C. 10.

<h3>What is the Coefficient of a Variable?</h3>

The coefficient of a variable is the numerical value that comes before the variable and multiplies it.

Find the product of (-x - 5)²:

(-x - 5)(-x - 5)

-x(-x - 5) -5(-x - 5)

x² + 5x + 5x + 25

x² + 10x + 25

The x-term is "10x". The coefficient is: 10.

Learn more about the coefficient of a variable on:

brainly.com/question/16895867

#SPJ1

5 0
3 years ago
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