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stealth61 [152]
3 years ago
14

In forming a confidence interval for μ1 - μ2, only two assumptions are required: independent samples and sample sizes of at leas

t 30.
a. True
b. False
Mathematics
1 answer:
AysviL [449]3 years ago
6 0
I’m not sure but I guess it’s false
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If f(7)=22, then f^-1(f(7))=?<br> Please help!!
alexira [117]

Answer:

  7

Step-by-step explanation:

In general, the point of an inverse function is to show you the value that gives a particular function value. That is, ...

  f^{-1}(22)=7\\\\f^{-1}(f(x))=x\\\\f^{-1}(f(7))=7

7 0
3 years ago
Dhruv is at a car dealership. He is going to randomly select a vehicle to test drive. There are
andrew-mc [135]

Answer:

P(compact cars) = 4/25

Step-by-step explanation:

We know that there are 13 trucks, 8 vans, and 4 compact cars.

Let P denotes the probability of an event

Now we are asked to find the probability of compact cars

Number of favorable events = number of compact cars = 4

total number of outcomes = 13+8+4 = 25

hence, P(compact cars) = number of favorable events/total outcomes

                                       =4/25

8 0
2 years ago
Can anyone please help FAST! I’m looking for the correct answer and how you explain it! I’ll mark brainlist please and thank you
rosijanka [135]
1a. Y = mx + b
Y = 2x + b
-2 = 2(5) + b
-2 = 10 + b, b = 12
Equation: y = 2x + 12

1b. Standard form: Ax + By = C
subtract 12 and y from both sides
2x - y = -12
Equation: 2x - y = -12
7 0
3 years ago
Read 2 more answers
Triangle JKL is dilated from the origin at a scale factor of 10 to create triangle J′K′L′.Select the option that completes the s
Aneli [31]

Given: Triangle JKL is dilated from the origin at a scale factor of 10 to create triangle J′K′L′.

Required: Correct option that complete the statement.

Explanation:

Now, triangle is dilated from the origin at a scale factor of 10.

So, the sides will become larger, but angles will remain the same.

Hence, the triangles will be similar as sides will be in proption (SSS rule).

So, The triangles are similar because their corresponding sides are proptional and their corresponding angles are congurent.

Final Answer: Second group is correct answer.

5 0
1 year ago
PLEASE HELP WITH EASY MATH
Morgarella [4.7K]
The constant of proportionality is $1.5 per jar of sauce. Hope it help!
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3 years ago
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