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3 years ago

Hola me pueden ayudar doy más puntos

Mathematics

2 answers:

stepan [7]3 years ago

7 0

Answer:

A. -5. B) 4. C) 2. D) -7 e) -3 f)-5 g) -3 h) -2 i) -5 j) -5 k) -3 L) -6 m) -1 n)-10 o) 10 p)-10

q) 4 r) 2 S) 0 t) -7 u) -13

Step-by-step explanation:

zhannawk [14.2K]3 years ago

4 0

A. -5. B) 4. C) 2. D) -7 e) -3 f)-5 g) -3 h) -2 i) -5 j) -5 k) -3 L) -6 m) -1 n)-10 o) 10 p)-10 q) 4 r) 2 S) 0 t) -7 u) -13
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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

Solve for x: 4(x + 2) = 3(x − 2)

Oliga [24]

Answer:

x = -14

Step-by-step explanation:

4x + 8 = 3x - 6

4x = 3x - 14

x = -14

5 0

3 years ago

Read 2 more answers

For what value of "a" will the product shown below have a purely imaginary value? (Show work please)

MakcuM [25]

If you expand out the brackets you get this,

(4+5i)(a+2i) = 4a + (5a)i + 8i - 10

The -10 comes from 5i * 2i.
Squaring i becomes -1.

Let's group the real stuff together,
and imaginary separately,

(4a - 10) + (5a + 8)i

For this to be purely imaginary,
the real part needs to be zero.

Therefore 4a - 10 = 0

Solve for a.

5 0

3 years ago

Use the distributive property to simplify 0.75(3.5a-6b)

Studentka2010 [4]

(0.75 * 3.5a) + (0.75 * -6b) = 2.63a -4.5b

3 0

3 years ago

2) On Monday, the stock rose 6.25 points. Wednesday, the stock dropped 9 points. At the end of the week, the stock dropped anoth

Darina [25.2K]

Answer:

-6.25

Step-by-step explanation:

6.25 - 9= -2.75.

-2.75-3.5= -6.25

5 0

3 years ago