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3 years ago

A bakery has 42 donuts and 24 muffins for sale. What is the ratio of muffins to donuts

Mathematics

2 answers:

Lana71 [14]3 years ago

6 0

The ration is 12 muffins to every 21 donuts

Korolek [52]3 years ago

6 0

Muffins/Donuts = (substitute the values) 24/42, and then simplify the fraction. So the ration is 4/7 or 4:7.

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A new catalyst is being investigated for use in the production of a plastic chemical. Ten batches of the chemical are produced.

zzz [600]

Answer:

$CI=(66.54,78.46)$

Step-by-step explanation:

Given : A new catalyst is being investigated for use in the production of a plastic chemical. Ten batches of the chemical are produced. The mean yield of the 10 batches is 72.5% and the standard deviation is 5.8%. Assume the yields are independent and approximately normally distributed.

To find : A 99% confidence interval for the mean yield when the new catalyst is used ?

Solution :

Let X be the yield of the batches.

We have given, n=10 , $\bar{X}=72.5\%$ , s=5.8%

Since the size of the sample is small.

We will use the student's t statistic to construct a 995 confidence interval.

$\bar X\pm t_{n-1,\frac{\alpha}{2}}\frac{s}{\sqrt n}$

From the t-table with 9 degree of freedom for $\frac{\alpha}{2}=0.005$

$t_{n-1,\frac{\alpha}{2}}=t_{9,0.005}$

$t_{n-1,\frac{\alpha}{2}}=3.250$

The 99% confidence interval is given by,

$CI=72.5 \pm 3.25\frac{5.8}{\sqrt{10}}$

$CI=72.5 \pm 5.96$

$CI=(72.5+5.96),(72.5-5.96)$

$CI=(66.54,78.46)$

8 0

3 years ago

Can someone please help me?

Kaylis [27]

Answer:

none because they all correlate with each other and there are no obvious anomalies

Step-by-step explanation:

3 0

3 years ago

If Jane is not maximizing her utility with the original purchase combination, remembering the Law of Diminishing Marginal Utilit

gayaneshka [121]

Answer:

Using the Law of Diminishing Marginal Utility, Jane would not be better off buying one more fry, since the marginal utility she obtains from the fries are lower when compared to the chicken sandwich; therefore, she would be better off ordering another chicken sandwich

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2 years ago

I need this rn 3×-7 equivalent expressions A. -21 B. 4 C. -4 D. 21

Drupady [299]

Answer: The answer is A. -21

Its simplified and i just multiplied 3 by -7 :)

8 0

2 years ago

Read 2 more answers

Really need help , it will help my grade!!!

klio [65]

Answer:

ax + b= ax + b

Step-by-step explanation:

Infinite many solutions when both sides are equal

ax + b= ax + b

5 0

3 years ago