Nth sequence term question

Mathematics

1 answer:

SSSSS [86.1K]3 years ago

6 0

One example is when n is 11. 11^2 + 4 = 125. 11 is odd but the 11th term of the sequence, 125, is not prime because 125 is divisible by 5 and 25.

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13.) The heights (in inches) of males in the United States are believed to be approximately normally

Fantom [35]

Answer:

Option C) 0.830

Step-by-step explanation:

We are given the following in the question:

The heights (in inches) of males in the United States are believed to be approximately normally distributed with mean $\mu$ .

Sample size, n = 25

Sample mean, $\bar{x}$ = 69.72 inches

Standard deviation, $\sigma$ = 4.15 inches

We have to find the standard error of $\bar{x}$ .

Standard error =

$\dfrac{\sigma}{\sqrt{n}} = \dfrac{4.15}{\sqrt{25}} = \dfrac{4.15}{5} = 0.83$

Thus, the standard error of $\bar{x}$ is 0.83 inches.

The correct answer is

Option C) 0.830

3 0

4 years ago

Part A: Using computer software, a correlation coefficient of r = 0. 01 was calculated. Based on the scatter plot, is that an ac

sattari [20]

Part A: Based on the scatter plot given, the correlation coefficient of r = 0.01 is most likely accurate because the data points are far away from each other.

Part B: A casual relationship would be: the number of strawberries picked and the amount of fertilizers used.

<h3>What is Correlation Coefficient?</h3>

Correlation coefficient, r, is quantitative measure that measures the extent to which two variables are associated.

The closer the data points are on a scatter plot, the closer the value of r is to 1 or -1.

The data points in the scatter plot are farther apart and the trend slopes upwards to the right, this means that the correlation coefficient, r, would be positive but very low.

Thus, based on the scatter plot given, the correlation coefficient of r = 0.01 is most likely accurate because the data points are far away from each other.

A casual relationship would be: the number of strawberries picked and the amount of fertilizers used.

Learn more about correlation coefficient on:

brainly.com/question/4219149

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2 years ago

7.5% sales tax on a $210.00 pendant

KonstantinChe [14]

Answer:

225.75

Step-by-step explanation:

Before Tax Price: $210.00

Sale Tax: 7.50% or $15.75