1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Serjik [45]
3 years ago
15

Brandon is baking cookies for a school bake sale. If he can make 2 dozen cookies in 23 minutes which is a reasonable estimate of

the amount of time it will take him to make 12 dozen cookies? A) between 4 and 5 hours B) between 3 and 4 hours C) between 2 and 3 hours D) between 1 and 2 hours
Mathematics
2 answers:
tatiyna3 years ago
5 0

Answer:

The answer would be C.

Step-by-step explanation:

madreJ [45]3 years ago
3 0
It would be around 138 minutes which is 2 hrs and 18 min so it would be C).
You might be interested in
20pts PLS EXPLAINN for brainliest
Inga [223]

inequality is C D A

6 0
3 years ago
Eunice buys dog bed with a listed price of $31. Eunice uses a sale that provides 30% off. What is the total
Pachacha [2.7K]

Answer:

21.70

Step-by-step explanation:

First find the discount

31 * 30%

31 *.30

9.3

Subtract from the original amount

31 - 9.3

21.70

3 0
3 years ago
Yale is working out 2 hours in a gym. If he spends 21 minutes on stretching and 45 minutes of Jogging. What percentage of time d
MArishka [77]
54% of the time. 21 and 45 is 66. Two hours is 120. The you subtract
6 0
3 years ago
What type of triangle if any has the Lengths of 11,15,and 25
castortr0y [4]
Scalene trian<span>gle

-----------------------
</span>
5 0
3 years ago
Read 2 more answers
Many high school students take the AP tests in different subject areas. In 2007, of the 144,796 students who took the biology ex
Nataly [62]

Answer:

(0.582-0.485) - 1.64 \sqrt{\frac{0.582(1-0.582)}{144796} +\frac{0.485(1-0.485)}{211693}}=0.0942  

(0.582-0.485) + 1.64 \sqrt{\frac{0.582(1-0.582)}{144796} +\frac{0.485(1-0.485)}{211693}}=0.09978  

And the 90% confidence interval would be given (0.0942;0.09978).  

We are confident at 90% that the difference between the two proportions is between 0.0942 \leq p_A -p_B \leq 0.09978

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

p_A represent the real population proportion female for Biology

\hat p_A =\frac{84199}{144796}=0.582 represent the estimated proportion female for biology

n_A=144796 is the sample size for A

p_B represent the real population proportion female for calculus AB

\hat p_B =\frac{102598}{211693}=0.485 represent the estimated proportion female for Calculus AB

n_B=211693 is the sample size required for B

z represent the critical value for the margin of error  

The population proportion have the following distribution  

p \sim N(p,\sqrt{\frac{p(1-p)}{n}})  

The confidence interval for the difference of two proportions would be given by this formula  

(\hat p_A -\hat p_B) \pm z_{\alpha/2} \sqrt{\frac{\hat p_A(1-\hat p_A)}{n_A} +\frac{\hat p_B (1-\hat p_B)}{n_B}}  

For the 90% confidence interval the value of \alpha=1-0.90=0.1 and \alpha/2=0.05, with that value we can find the quantile required for the interval in the normal standard distribution.  

z_{\alpha/2}=1.64  

And replacing into the confidence interval formula we got:  

(0.582-0.485) - 1.64 \sqrt{\frac{0.582(1-0.582)}{144796} +\frac{0.485(1-0.485)}{211693}}=0.0942  

(0.582-0.485) + 1.64 \sqrt{\frac{0.582(1-0.582)}{144796} +\frac{0.485(1-0.485)}{211693}}=0.09978  

And the 90% confidence interval would be given (0.0942;0.09978).  

We are confident at 90% that the difference between the two proportions is between 0.0942 \leq p_A -p_B \leq 0.09978

5 0
3 years ago
Other questions:
  • At a local dealership 30% of cars are SUVs, 50% of the cars are painted white, and 15% are white and an SUV. If we randomly sele
    5·1 answer
  • What is the equation for the line that passes through the point (5,5) and has a slope of 2? Please show work.
    13·1 answer
  • Chuck E Cheese charges for the number of hours you rent the party room and the number of
    11·1 answer
  • [I WILL GIVE YOU BRAINIEST!] A spinner has five equal segments labeled 1, 2, 3, 4, and 5. Out of 100 spins, how many times could
    9·2 answers
  • 12 8/9- 10 1/6 =<br><br> Jajahgahahsjhshsghs
    11·1 answer
  • The equation of a line, written in point-slope form, is y - 4=5(x - 5). What is the slope (m) and a point this line goes through
    11·1 answer
  • <img src="https://tex.z-dn.net/?f=%5Ccolor%7Bred%7D%7B%5Ctt%20%7BIn%20%5C%3A%20%20%CE%94%20%5C%3A%20%20ABC%2C%20%E2%88%A0B%3D90%
    7·2 answers
  • Could someone answer so I can compare my answers to whatever yall get?
    11·1 answer
  • Circle the more Precise measurement.
    12·1 answer
  • Which choice is the correct graph of Ix &lt;3?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!