Answer:
0.3051
Explanation:
mean (μ) = 20.8, standard deviation (σ) = 5.6 and the number of samples (n) = 36 scores.
Z score also known as standard score is used in probability to measure the number of standard deviations by which the value of what is being measured is above or below the mean. It is given by the equation:
Z score (z) =
For x = 21.6,
From the probability table:
P(x < 21.6) = P(z < 0.86) = 0.3051 = 30.51%
The probability that the mean score for the sample is less than 21.6 = 30.51%
Answer:
The answer is C.
Explanation:
As air warms, it can “hold” more water vapor than air at cooler temperatures. As temperatures rise, more water evaporates from soils, plants, oceans and waterways — this becomes vapor. Additional water vapor means there’s more water available for heavier rain.
Answer:
What Is Capital Accumulation?
Capital accumulation refers to an increase in assets from investments or profits and is one of the building blocks of a capitalist economy. The goal is to increase the value of an initial investment as a return on investment, whether that be through appreciation, rent, capital gains, or interest.
Based on the information given, the value of the area of the irregular figure will be 13.7 ft².
<h3>How to calculate the area.</h3>
From the complete question, the area of a triangle will be:
= 0.5 x base x height
= 0.5 x 3.6 x 4.8
= 8.64 ft²
Area of the semicircle = 0.5πr²
Area of the semicircle = 0.5 x 3.14 x 1.8²
Area of the semicircle = 5.09 ft²
Area of the irregular figure = Area of the semicircle + Area of the triangle
= 5.09 ft² + 8.64 ft²
= 13.73ft² = 13.7 ft²
Learn more about area on:
brainly.com/question/12327739
Answer:
The inequality symbol is incorrect because she can spend up to and including $65.
The expression 5. 50b + 7. 5 is correct because $5. 50 per book is 5. 50b and that is added to the shipping fee of $7. 50 to determine the total purchase price.
Explanation:
The inequality should be 5.50b + 7.5 ≤ 65 because she can use less than $65 or all $65 to spend on books.
Also, the shipping fee is for all the books she buys combined, not for each individual book so the left side of the inequality should read 5.50b + 7.5.