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3 years ago

Please answer this as quick as you can

Mathematics

1 answer:

SIZIF [17.4K]3 years ago

8 0

Answer:

B is correct because there cannot be negative people in a cafeteria.

Step-by-step explanation:

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Researchers are studying two populations of sea turtles. In population D, 30 percent of the turtles have a shell length greater

jeka57 [31]

Answer:

a. 0.1917

b. 0.0914

d. 0.1580

Step-by-step explanation:

(a)

$P^D = \frac{15}{40} = 0.375$

$P^E = \frac{11}{60} =0.8133$

Mean, $\sigma_{P^D-P^E} = P^D-P^E$ = 0.375 -0.1833 = 0.1917

(b) sample prop ? Show your work and label each value.

Mean, = = 0.1917

Standard deviation = $\sqrt{\frac{P^D(1-P^D)}{N_D} +\frac{P^E(1-P^E)}{N_E} }$

Standard deviation = $\sqrt{\frac{0.375(1-0.375)}{40} +\frac{0.1833(1 - 0.1833)}{60} }$

Standard deviation = 0.0914

(c)

Normality condition:

np ≥ 10 and n(1-p) ≥ 10

Both the samples satisfy the normality condition.

(d)

The probability is obtained by calculating the z score,

$z = \frac{(P^D-P^E)-(P^d-P^e)}{\sigma_{P^D - P^E}}$

$z = \frac{0.1917-0.1}{0.0914}$ = 1.0029

P(z > 1.0029) = 1 - P(z ≤ 1.0029)

The probability is obtained from the z distribution table,

P(Z > 1.0029) = 1 - 0.8420 = 0.1580

3 0

3 years ago

Zoey took a taxi from her house to the airport. The taxi company charged a pick-up fee of $1.20 plus $3.25 per mile. The total f

yan [13]

Equation: 3.25x + 1.2 = 40.2

Answer: x = 12

8 0

3 years ago

Last month a Carpenter made five tables this month he made 80% more than that how many tables do the carpenter make this month

Nataliya [291]

Answer:

9 tables

Step-by-step explanation:

5 × 1.8 = 9

to find how many tables he made you have to multiply the number he made by 1, then .(whatever the percent is)

4 0

3 years ago

Read 2 more answers

How can u tell if a ratio is proportional

kirza4 [7]

Answer:

Ratios are usually proportional if they are the same or have the same relationship.

Step-by-step explanation:

Like: you have 2 fractions that reduce and come out the same they are proportional.

Hope my answer has helped you!

4 0

3 years ago

Read 2 more answers

Patrick has assets that total $9,500. his liabilities total $1,900. which expression will find patrick’s net worth? 9,500 dollar

Aleksandr-060686 [28]

An expression has numbers, variables, and mathematical operations. Patrick's net worth is represented by the expression $9,500-$1,900.

<h3>What is an Expression?</h3>

In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.

As it is given that the value of the assets with Patrick is $9,500, while the liabilities are $1,900. Thus, his net worth will be the difference between his assets and his liabilities.

Thus, Patrick's net worth of Patrick can be written as,

$\rm Net\ worth = Assets-Liabilities$

$= \$9,500-\$1,900$

Thus, Patrick's net worth is represented by the expression $9,500-$1,900.

Learn more about Expression:

brainly.com/question/13947055

8 0

2 years ago