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
Olin [163]
3 years ago
13

A sample of 400 racing cars showed that 80 cars cost over $700,000. What is the 99% confidence interval of the true proportion o

f cars costing over $700,000
SAT
1 answer:
Amiraneli [1.4K]3 years ago
8 0
,q=0.8, n=400
(a,b)= *=.2+-(2.576*.02)=(.1485, .2515)
We can say with 99% confidence that the proportion of cars costing over $700,000 is in the interval (.1485, .2515).
Hope this helps!

You might be interested in
<img src="https://tex.z-dn.net/?f=%20%20n%20-%20%5Csqrt%7Bc%20%2B%205%20%3D%201%7D%20" id="TexFormula1" title=" n - \sqrt{c + 5
Salsk061 [2.6K]

Answer:

c=11

Explanation:

n -  \sqrt{c  +  5}  = 1

5 -  \sqrt{c + 5}  = 1

Add sqr root of c+5 to both sides

5 = 1 +  \sqrt{c + 5}

4 =  \sqrt{c + 5}

16 = c + 5

c = 11

7 0
3 years ago
Read 2 more answers
Each of 6 samples has a different standard deviation. How many of the 6
ivann1987 [24]

The number of six samples that could belong to the same population is equivalent to six.

Option A is the correct answer.

<h3>What is the standard deviation?</h3>

The standard deviation is the indicator to determine the variation between the set of amounts as given in the statistical information.  

The population is referred to as the entire information being prescribed in data relating to any concept. If the number of samples in a population is 10, then the samples in the same population will also be 10. This shows the number of samples is always equal to the samples in the same population.

Therefore, the six samples belong to the same population comprising of six samples having varied standard deviations.

Learn more about the standard deviation in the related link:

brainly.com/question/1456822

#SPJ1

4 0
2 years ago
How does the speaker's relationship to the tropical setting.
mart [117]

while the speaker appreciates the warmer climate at first

________________________________________________

8 0
3 years ago
Before the switch is closed in the figure, the potential across the capacitor is 200 V. At some instant after the switch is clos
Lerok [7]

The energy in the capacitor at the instant after the switch is closed, based on the potential across the capacitor is 31 mJ

<h3>What is the energy amount in the capacitor?</h3>

Because total energy is constant, this can be found by the formula:

= Initial energy in capacitor - Energy in inductor

The initial energy in the capacitor is:

= 0.5 x 4 x 10⁻⁶ x 200²

= 0.08J

The energy in the inductor is:

= 0.5 x 0.2 x 0.7²

= 0.049

The energy in the capacitor at that instant is:

= 0.08 - 0.049

=0.031 j

= 31 J

Find out more on the energy in the capacitor at brainly.com/question/27960614

#SPJ1

5 0
2 years ago
Try a few examples to verify that the doubling time is indeed 7 days. Day 0: plants day 7: plants did the water lilies double? d
mr_godi [17]

Answer: 4

8

yes

10

22

approximately

day 45

Explanation:

4 0
2 years ago
Read 2 more answers
Other questions:
  • Your study unit notes that relationships, careers, and education are all processes. which of the following statments best explai
    14·1 answer
  • What is the answer to this riddle?
    14·1 answer
  • What is the total number of drawSprites(); you can have in a program? *
    12·1 answer
  • Kelly is sledding on a snowy hill in the winter. The energy the sled has as it slides down the hill is a form of
    14·2 answers
  • 1-10 i think im cute
    10·2 answers
  • Kể về một kỉ niệm của một người thân trong gia đình Ngữ Văn 9
    8·1 answer
  • The author’s main purpose is to convince readers to.
    5·1 answer
  • Which stage direction from part one of trifles most adds to the suspenseful tone?.
    13·1 answer
  • Sami needs money to pay his tuition fees; as his best friends, we _____________ help him immediately. *.
    11·1 answer
  • Which use of media is most inappropriate for this scenario a speech honoring
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!