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Strike441 [17]
2 years ago
10

Is the average amount spent on textbooks per semester by accounting majors significantly

Mathematics
1 answer:
Whitepunk [10]2 years ago
7 0

A confidence interval is simply the range of estimates for an unknown parameter, which is defined as an interval with a lower bound and an upper bound.

<h3>What is a confidence interval?</h3>

Your information is incomplete as the data is not given. Therefore, an overview of the confidence interval will be given.

A 90% confidence interval means that the researcher is 90% confident that the values of the results will simply fall between the upper and lower limits if the procedure is repeated again.

You can find a confidence level for data by simply taking half of the size of the confidence interval, then multiplying it by the square root of the sample size, and then dividing by the sample standard deviation.

Finally, look up the resulting ​Z​ or ​t​ score in a table in order to find the level.

Learn more about confidence interval on:

brainly.com/question/15712887

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Two airplanes leave the airport. Plane A departs at a 44° angle from the runway, and plane B departs at a 40° angle from the run
lawyer [7]

Answer: Answer:

Plane B was farthest away from the airport

Step-by-step explanation:

"This question requires you to visualize the run way as the horizontal distance to be covered, the height from the ground as the height gained by the plane after take of and the distance from the airport as the displacement due to the angle of take off.

In plane A

The take-off angle is 44° and the height gained is 22 ft.

Apply the relationship for sine of an angle;

Sine Ф°= opposite side length÷hypotenuse side length

The opposite side length is the height gained by plane which is 22 ft

The angle is 44° and the distance the plane will be away from the airport after take-off will be represented by the value of hypotenuse

Applying the formula

sin Ф=O/H where O=length of the side opposite to angle 44° and H is the hypotenuse

In plane B

Angle of take-off =40°, height of plane=22miles finding the hypotenuse

Solution

After take-off and reaching a height of 22 ft from the ground, plane A will be 31.67 miles from the airport

After take-off and reaching a height of 22 ft from the ground, plane B will be 34.23 miles away from the airport."

Excerpt from Brainly

3 0
2 years ago
Read 2 more answers
Which statements about the graph of the function y=(1/3)
Elena-2011 [213]
Answer: The range of the function is all real numbers is true.

Explanation: the graph of y = 1/3 is just a horizontal line at y = 1/3. so it’s not increasing or decreasing (it’s staying the same). there is no x-intercept, and the y-intercept is (0, 1/3). the range is all the possible y values, and there are infinite possible y values, so it is all real numbers.

hope this helps!
8 0
3 years ago
Can someone help me with 3
attashe74 [19]

Area = Length x Width

72 = Length x 6

Length = 12

5 0
3 years ago
What is the letter v​
Nimfa-mama [501]

Answer:

Step-by-step explanation:

-81=-5(v+5)-2v                         Original equation

-81=-5v-25-2v                          Distributive property

-81=-7v-25                                Subtract like terms

-56=-7v                                     Simplify

8=v                                           Simplify

4 0
3 years ago
Write 1/4 as a decimal.
n200080 [17]

Answer:

0.25

Step-by-step explanation:

4 0
3 years ago
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