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
oksano4ka [1.4K]
3 years ago
13

Please help as fast as possible with explanation​

Mathematics
1 answer:
Doss [256]3 years ago
7 0

Answer:

the pic is not clear. what is it asking?

Step-by-step explanation:

You might be interested in
PLEASE HELP!!!!!! 4.13×10^-8×0.04×10^5?!
vladimir2022 [97]
Try solving it on your own
you must factor the integers
0.00017 is the answer though
4 0
3 years ago
Elijah's workout at the gym consists of just the elliptical and treadmill. After burning 450 miles
Galina-37 [17]

Answer:

375

Step-by-step explanation:

12.5=1min

30min=?

30x12.5=357

6 0
3 years ago
What is the word form for 5.921
Pavel [41]
Five and nine hundred twenty-one thousandths 
4 0
3 years ago
Help please on this ​
jenyasd209 [6]

Answer:

there is not enough information because x and 55 are parrallel, not congruent.

Step-by-step explanation:

3 0
3 years ago
A study was recently conducted at a major university to estimate the difference in the proportion of business school graduates w
sveta [45]

Answer:

(0.1875-0.274) - 1.96 \sqrt{\frac{0.1875(1-0.1875)}{400} +\frac{0.274(1-0.274)}{500}}=-0.1412  

(0.1875-0.274) + 1.96 \sqrt{\frac{0.1875(1-0.1875)}{400} +\frac{0.274(1-0.274)}{500}}=-0.0318  

And the 95% confidence interval would be given (-0.1412;-0.0318).  

We are confident at 95% that the difference between the two proportions is between -0.1412 \leq p_A -p_B \leq -0.0318

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 for business  

\hat p_A =\frac{75}{400}=0.1875 represent the estimated proportion for Business

n_A=400 is the sample size required for Business

p_B represent the real population proportion for non Business

\hat p_B =\frac{137}{500}=0.274 represent the estimated proportion for non Business

n_B=500 is the sample size required for non Business

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}})  

Solution to the problem

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 95% confidence interval the value of \alpha=1-0.95=0.05 and \alpha/2=0.025, with that value we can find the quantile required for the interval in the normal standard distribution.  

z_{\alpha/2}=1.96  

And replacing into the confidence interval formula we got:  

(0.1875-0.274) - 1.96 \sqrt{\frac{0.1875(1-0.1875)}{400} +\frac{0.274(1-0.274)}{500}}=-0.1412  

(0.1875-0.274) + 1.96 \sqrt{\frac{0.1875(1-0.1875)}{400} +\frac{0.274(1-0.274)}{500}}=-0.0318  

And the 95% confidence interval would be given (-0.1412;-0.0318).  

We are confident at 95% that the difference between the two proportions is between -0.1412 \leq p_A -p_B \leq -0.0318

7 0
2 years ago
Other questions:
  • Write the given sentence as an equation.
    13·1 answer
  • (Affgfbwg I’m struggling) Find the value of x in the isosceles triangle shown below
    13·1 answer
  • John conducted a regression analysis of the sale price of a random sample of houses in one neighborhood as a function of house s
    6·1 answer
  • Which of the following options have the same value as 62% of 45?
    6·1 answer
  • Joey is buying plants for his garden. He wants to have at least twice as many flowering plants as nonflowering plants and a mini
    13·2 answers
  • The total price of four oranges and five pears is $32 while the total price of three oranges and two pears is $17. How much is a
    8·2 answers
  • 4x+18=7x-12 <br> !!!!!!!!!!!!!!!!!! need help
    7·1 answer
  • A ladder 15 metres long leans against a vertical wall so that the top of the ladder is 12 metres above the ground. What angle do
    13·1 answer
  • If 3x - 5 = 22, find the value of 2x.<br> a. 6<br> b. 24<br> c. 12<br> d. 18
    6·1 answer
  • How to plot and graph y1 = 17,105 + 1.31x
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!