MATHEMATICS COLLEGE

Suppose that weekly income of migrant workers doing agricultural labor in Florida has a distribution with a mean of $520 and a standard deviation of $90. A researcher randomly selected a sample of 100 migrant workers. What is the probability that sample mean is less than $500

Answers

Answer 1

Answer:

Answer:

$z = (500-520)/((90)/(√(100)))= -2.22$

And we can find this probability using the normal standard distribution and we got:

$P(z<-2.22) =0.0132$

Step-by-step explanation:

For this case we have the foolowing parameters given:

$\mu = 520$ represent the mean

$\sigma =90$ represent the standard deviation

$n = 100$ the sample size selected

And for this case since the sample size is large enough (n>30) we can apply the central limit theorem and the distribution for the sample mean would be given by:

$\bar X \sim N(\mu , (\sigma)/(√(n)))$

And we want to find this probability:

$P(\bar X <500)$

We can use the z score formula given by:

$z = (500-520)/((90)/(√(100)))= -2.22$

And we can find this probability using the normal standard distribution and we got:

$P(z<-2.22) =0.0132$

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What is the greatest common factor osb42 and 63?

Answers

Answer:

We found the factors and prime factorization of 42 and 63. The biggest common factor number is the GCF number. So the greatest common factor 42 and 63 is 21.

Step-by-step explanation:

IF U GET THE RIGGT ANSCER I WILL MARK U AS!! The prices and sizes of popcorn sold at local theaters are shown in the table. Popcorn Prices and Sizes at Different Theaters Ounces Price CinePlex 100 $8.25 Mr. Movie 96 $7.00 Stadium Cinema 112 $6.50 Theater Mania 136 $7.50 Which theater's popcorn is the best buy?
O Cine Plex
O Mr. Movie
O Stadium Cinema
O Theater Mania

Answers

Answer:

Theater mania

Answer:

ur answer is the last one TheaterMania

I took the test on Edg.

Step-by-step explanation:

Find the value of X.

Answers

Answer:

x = 6

Step-by-step explanation:

Answer:

x=6

Step-by-step explanation:

32+4 is 36

90-36 is 54

9 times 6 is 54

54+4 is 58

58+32 is 90

pls mark me brainliest :)

Annabelle spent $5 to buy 4 raffle tickets.how many tickets can she buy for $20

Answers

She can buy 16 tickets.

$5 = 4 tickets so $20 = 16 tickets

How many numbers are between 0 and 4

Answers

Answer:

infinite rational numbers

Step-by-step explanation:

There are infinite rational numbers between 0 and 4. Now,single decimal value change like 2.34 and 2.35 can change the total value of a rational number. And there are infinite combinations of this decimal value between just two numbers.

Answer:

3 numbers

Step-by-step explanation:

What does perimeter mean

Answers

Perimeter is the sum of all sides of the polygons.

For a circle, it's called circumference

For Example

The triangle has three sides long 3 4 5 cm

perimeter = 3+4+5 =12 cm

The circle has a radius long 7 cm

circumference = 2πr = 14π cm

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