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2 years ago

CAN SOMEBODY HELP 'Five less than one-fourth of a number'

Mathematics

2 answers:

Veseljchak [2.6K]2 years ago

8 0

Answer:

1/8,1/16,1/18,1/20

Step-by-step explanation:

Oksi-84 [34.3K]2 years ago

8 0

Answer:

4 3/4

Step-by-step explanation:

= 5 - 1/4

= 4 4/4 - 1/4

=4 3/4

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genetic experiment with peas resulted in one sample of offspring that consisted of green peas and yellow peas. a. Construct a %

Andreas93 [3]

Complete Question

A genetic experiment with peas resulted in one sample of offspring that consisted of 432 green peas and 164 yellow peas. a. Construct a 95% confidence interval to estimate of the percentage of yellow peas. b. It was expected that 25% of the offspring peas would be yellow. Given that the percentage of offspring yellow peas is not 25%, do the results contradict expectations?

Answer:

The 95% confidence interval is $0.2392 < p < 0.3108$

No, the confidence interval includes 0.25, so the true percentage could easily equal 25%

Step-by-step explanation:

From the question we are told that

The total sample size is $n = 432 + 164 =596$

The number of offspring that is yellow peas is $y = 432$

The number of offspring that is green peas is $g = 164$

The sample proportion for offspring that are yellow peas is mathematically evaluated as

$\r p = \frac{ 164 }{596}$

$\r p = 0.275$

Given the the confidence level is 95% then the level of significance is mathematically represented as

$\alpha = (100 - 95)\%$

$\alpha = 5\% = 0.0 5$

The critical value of $\frac{\alpha }{2}$ from the normal distribution table is

$Z_{\frac{\alpha }{2} } = 1.96$

Generally the margin of error is mathematically evaluated as

$E = Z_{\frac{\alpha }{2} } * \sqrt{\frac{\r p (1- \r p )}{n} }$

=> $E = 1.96 * \sqrt{\frac{0.275 (1- 0.275 )}{596} }$

=> $E = 0.0358$

The 95% confidence interval is mathematically represented as

$\r p - E < p < \r p + E$

=> $0.275 - 0.0358 < p < 0.275 + 0.0358$

=> $0.2392 < p < 0.3108$

6 0

2 years ago

What is the answer????

dem82 [27]

E I think I am not sure though.

6 0

2 years ago

Sandy spent half of Her allowance going to the movies. She washed the family car and earn seven dollars. What is your weekly all

Veseljchak [2.6K]

Answer:

I'm pretty sure it's 13.

Step-by-step explanation:

4 0

3 years ago

22 = 5c + 3c - c +8<br>Please solve for c.

bogdanovich [222]

Answer:2=c

Step-by-step explanation:

22=5c+3c-c+8

22-8=5c+3c-c+8-8

14=5c+3c-c+0

14=5c+3c-c

14=8c-2

14=7c

14/7=7c/7

2=c

Check answer by pluging 2 in for c.

5*2+3*2-2+8

=10+6-2+8

=16-2+8

=14+8

=22

The final answer is 2=c

4 0

3 years ago

I'd appreciate it if anyone could help! :)<br><br> Which graph represents the function?

Monica [59]

Answer: Upper right corner

=========================================================

How I got that answer:

The line y = x goes through (0,0) and (1,1). You would normally extend this line out as far as you can in both directions. However, the inequality x < -1 says you can only graph this if x is less than -1. We will not graph any part of the graph that is beyond x = -1 to the right. So we only have a small piece of it. The left piece of y = x. There is an open hole at the endpoint.

Similarly, y = -x is only graphed if x >= -1. We have a closed endpoint here. This graph goes through (0,0) and (1,-1). We erase the portion that is to the left of x = -1.

Doing all this leads to the upper right corner choice as our answer. The bottom right corner is close to the answer, but the open and closed endpoints are in the wrong spots.

3 0

2 years ago