Does a point have width

0.07x= 175 solve for x

lora16 [44]

Divide each term by 0.07 and simplify your answer should be
x=2500
Hope this helped please give brainliest

5 0

3 years ago

Read 2 more answers

How to solve this using probability

Fudgin [204]

To solve this using probability simply count the shapes that have at least 4 sides, and represent it as a fraction among all shapes in the spinner.

P(4 sides) = 5/6.
P(tails) = 1/2.

Both are independent events and as such must be multiplied with each other.

5/6 • 1/2 = 5/12,

This is the combined probability of both events occurring.

8 0

3 years ago

Worth 15 points please help.

poizon [28]

Answer:

Step-by-step explanation:

no. even number = 50

no. odd number = 50

P (even ) = 50/ 100= 1/2

P(odd after take 1 even) = 50/99

Dependent event cause the first P affects the second P ( affect the total number of selection)

8 0

3 years ago

Sales personnel for Skillings Distributors submit weekly reports listing the customer contacts made during the week.

mezya [45]

Answer:

a) The 90% confidence interval would be given by (18.52;20.49)

b) The 95% confidence interval would be given by (18.32;20.68)

Step-by-step explanation:

1) Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X=19.5$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

$\sigma=5.2$ represent the population standard deviation

n=75 represent the sample size

2) Confidence interval 90%

The confidence interval for the mean is given by the following formula:

$\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (1)

Since the Confidence is 0.90 or 90%, the value of $\alpha=0.1$ and $\alpha/2 =0.005$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.005,0,1)".And we see that $z_{\alpha/2}=1.64$

Now we have everything in order to replace into formula (1):

$19.5-1.64\frac{5.2}{\sqrt{75}}=18.515$

$19.5+1.64\frac{5.2}{\sqrt{75}}=20.485$

So on this case the 90% confidence interval would be given by (18.52;20.49)

3) Confidence interval 95%

Since the Confidence is 0.95 or 95%, the value of $\alpha=0.05$ and $\alpha/2 =0.025$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.025,0,1)".And we see that $z_{\alpha/2}=1.96$