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jek_recluse [69]
3 years ago
10

PLEASE HELP ME THE QUESTION THAT BLUE ARE MY ANSWERS THE ONE THAT DONSET I NEED HELP BUT CAN YOU SEE IF THE ONES THAT HAVE BULE

ARE CORRECT PLEASE THANKS YOU :)

Mathematics
1 answer:
Nikitich [7]3 years ago
6 0
The Blue ones are correct.


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Jeff wants to save $4000 to buy a used car. He has already saved $850. He plans to save an additional $150 each week. write and
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21 weeks

Step-by-step explanation:

150*21=3150

3150+850=4000

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How do you find the slope of a line​
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Answer: Using y=mx+b

Step-by-step explanation:

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a box measures 4 units by 2 1/2 units by 1 1/2 units. What is the greatest numberof cubes with a side length of 1/2 unit that ca
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\frac{4}{\frac{1}{2}}*\frac{2\frac{1}{2}}{\frac{1}{2}}*\frac{1\frac{1}{2}}{\frac{1}{2}}\\\frac{4(2)}{1}*\frac{\frac{5}{2}}{\frac{1}{2}}*\frac{\frac{3}{2}}{\frac{1}{2}}\\\frac{8}{1}*\frac{5}{1}*\frac{3}{1}\\120
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In a sample of 1200 U.S.​ adults, 191 dine out at a resaurant more than once per week. Two U.S. adults are selected at random
allochka39001 [22]

Answer:

a) The probability that both adults dine out more than once per week = 0.0253

b) The probability that neither adult dines out more than once per week = 0.7069

c) The probability that at least one of the two adults dines out more than once per week = 0.2931

d) Of the three events described, the event that can be considered unusual because of its low probability of occurring, 0.0253 (2.53%), is the event that the two randomly selected adults both dine out more than once per week.

Step-by-step explanation:

In a sample of 1200 U.S. adults, 191 dine out at a restaurant more than once per week.

Assuming this sample.is a random sample and is representative of the proportion of all U.S. adults, the probability of a randomly picked U.S. adult dining out at a restaurant more than once per week = (191/1200) = 0.1591666667 = 0.1592

Now, assuming this probability per person is independent of each other.

Two adults are picked at random from the entire population of U.S. adults, with no replacement, thereby making sure these two are picked at absolute random.

a) The probability that both adults dine out more than once per week.

Probability that adult A dines out more than once per week = P(A) = 0.1592

Probability that adult B dines out more than once per week = P(B) = 0.1592

Probability that adult A and adult B dine out more than once per week = P(A n B)

= P(A) × P(B) (since the probability for each person is independent of the other person)

= 0.1592 × 0.1592

= 0.02534464 = 0.0253 to 4 d.p.

b) The probability that neither adult dines out more than once per week.

Probability that adult A dines out more than once per week = P(A) = 0.1592

Probability that adult A does NOT dine out more than once per week = P(A') = 1 - P(A) = 1 - 0.1592 = 0.8408

Probability that adult B dines out more than once per week = P(B) = 0.1592

Probability that adult B does NOT dine out more than once per week = P(B') = 1 - P(B) = 1 - 0.1592 = 0.8408

Probability that neither adult dines out more than once per week = P(A' n B')

= P(A') × P(B')

= 0.8408 × 0.8408

= 0.70694464 = 0.7069 to 4 d.p.

c) The probability that at least one of the two adults dines out more than once per week.

Probability that adult A dines out more than once per week = P(A) = 0.1592

Probability that adult A does NOT dine out more than once per week = P(A') = 1 - P(A) = 1 - 0.1592 = 0.8408

Probability that adult B dines out more than once per week = P(B) = 0.1592

Probability that adult B does NOT dine out more than once per week = P(B') = 1 - P(B) = 1 - 0.1592 = 0.8408

The probability that at least one of the two adults dines out more than once per week

= P(A n B') + P(A' n B) + P(A n B)

= [P(A) × P(B')] + [P(A') × P(B)] + [P(A) × P(B)]

= (0.1592 × 0.8408) + (0.8408 × 0.1592) + (0.1592 × 0.1592)

= 0.13385536 + 0.13385536 + 0.02534464

= 0.29305536 = 0.2931 to 4 d.p.

d) Which of the events can be considered unusual? Explain.

The event that can be considered as unusual is the event that has very low probabilities of occurring, probabilities of values less than 5% (0.05).

And of the three events described, the event that can be considered unusual because of its low probability of occurring, 0.0253 (2.53%), is the event that the two randomly selected adults both dine out more than once per week.

Hope this Helps!!!

6 0
3 years ago
The function f(x)=lnx is transformed into the equation f(x)=ln(9.2x). Select from the drop-down menus to correctly identify the
d1i1m1o1n [39]

The function f(x)=ln(9.2x) is a horizontal compression of the parent function by a factor of 1/9.2

Step-by-step explanation:

The multiplication of a function by a number compresses or stretches the function vertically while to compress or stretch the function horizontally, the input variable is multiplied with a number.

i.e.

For\ f(x) => g = f(bx)

where b is a constant.

Now

If b>0 then the function is compressed horizontally

The given function is:

f(x) = ln\ x\\Transformed\ to\\f(x) = ln\ (9.2x)

As the variable in function is multiplied with a number greater than zero, the function will stretch horizontally.

The function f(x)=ln(9.2x) is a horizontal compression of the parent function by a factor of 1/9.2

Keywords: Transformation

Learn more about transformation at:

  • brainly.com/question/10666510
  • brainly.com/question/10699220

#LearnwithBrainly

5 0
3 years ago
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