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Gala2k [10]
3 years ago
11

Someone please help with this middle school math lol

Mathematics
1 answer:
vlabodo [156]3 years ago
4 0
#1 is 65 by 75, next is 3 by 9, and the last is 75 by 25
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A genetics experiment involves a population of fruit flies consisting of 1 male named Bart and 3 females named Charlene, Diana,
kenny6666 [7]

Answer:

(b) \frac{1}{2}

Step-by-step explanation:

1 male named Bart (b)

3 females named Charlene(c), Diana(d), and Erin(e).

Since there is replacement, the possible samples are:

bb, bc, be, bd, cb, cc, cd, ce, db, dc, dd, de, eb, ec, ed, and ee.

Total Number of pairs = 16

Event of picking 2 males:bb

Event of 1 male:bc,cb,bd,db,be,eb

Event of picking 0 males:

cc, cd, ce, dc, dd, de, ec, ed, and ee.

\begin{equation*} \begin{matrix}Proportion of males & Probability \\0 & 9/16 \\1 & 6/16 \\2 & 1/16 \end{matrix} \end{equation*}

b. The mean of the sampling distribution

\mu = (\frac{9}{16} X0 ) +(\frac{6}{16} X 1)+(\frac{1}{16} X 2) = \frac{8}{16} = \frac{1}{2}

c.  No; the proportion of males is \frac{1}{4} while the mean is \frac{1}{2}.

B. No, the sample mean is not equal to the population proportion of males. These values are not always equal, because proportion is an unbiased estimator.

7 0
3 years ago
Adam wants to learn more about a college basketball team. Which of the following is a statistical question Adam could ask? PLS H
Xelga [282]

Answer:

A. what was the final score of the game last night

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Jerome spent $20 on supplies to make 50 cookies for a bake sale. Write and solve an inequality to find the price that Jerome sho
Semenov [28]

Answer:

Each cookie will have to be sold for at least $0.90 if the profit is to be made is more than $25.

Step-by-step explanation:

The amount spent on supplies is $20.

The number of cookies baked is = 50.

If the profit to be made is more than $25.00 .

Then we can safely say that all the cookies have to be sold for

= $20.00 + $25.00

= $45.00

Therefor the required inequality can be written as

50 x ≥ $45.00            ⇒       x   ≥   \frac{45.00}{50}            ⇒      x   ≥  $0.90.

Therefore we can say that each cookie will have to be sold for at least $0.90 if the profit is to be made is more than $25.

7 0
3 years ago
Solve the inequality. Graph the solution<br>+5&lt;2<br>The solution is a<br>6​
BartSMP [9]

Answer:

x<-3

The graph in the attached figure

Step-by-step explanation:

<u><em>The correct question is</em></u>

Solve the inequality. Graph the solution.

x+5<2

we have

x+5

Solve for x

Subtract 5 both sides

x

The solution is the interval (-∞,-3)

All real numbers less than -3

In a number line, the solution is the shaded area at left of x=-3 (open circle)

The number x=-3 is not included in the solution

The graph in the attached figure

7 0
3 years ago
What value(s) of x will make x^2=25 true
lora16 [44]

Answer:

5 and up

Step-by-step explanation:

5^2=25

thus

25=25

5 0
3 years ago
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