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Mrrafil [7]
3 years ago
12

Mr. Johansen has just finished grading a test he had given to his 5th period history class. Overall, he feels that the class did

pretty well, knowing that two students earned a 100% and at least half of the class scored a 78% or better. But, Mr. Johansen also knows that there are a few very low scores in the 40% – 50% range that will lower the average.
In order to get a good picture of his class's performance on the test, Mr. Johansen plans to create a box-and-whisker plot to summarize the test results. Based on what he already knows, which of the following plots is most like what Mr. Johansen should expect for his 5th period history class?
Mathematics
1 answer:
anastassius [24]3 years ago
5 0

what do you mean i can help explain in a short sentence i dont want to read it all

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The four o'clock flower is an example of incomplete dominance: R = red, r = white, and Rr = pink. If two hybrids are crossed, wh
Trava [24]

Answer:

50%

Step-by-step explanation:

We are given that four o'clock flower is an example of incomplete dominance

Rt=Red

r=white

Rr=Pink

We have to find the chances that an offspring will have pink flowers when two hybrids are crossed.

When Rr crossed with Rr

Then we get RR,Rr,Rr and rr.

Color of RR=Red

Color of white =White

Color Rr =Pink

Chances of RR=25%

Chances of Rr=50%

Chances of rr=25%

Hence, the chances that an offspring will have pink color=50%

7 0
4 years ago
An article in the Washington Post on March 16, 1993 stated that nearly 45 percent of all Americans have brown eyes. A random sam
telo118 [61]

Answer:

The z-statistic for this test is -1.547 and P-value of the test is  0.0618

Step-by-step explanation:

An article in the Washington Post on March 16, 1993 stated that nearly 45 percent of all Americans have brown eyes.

We are given that  A random sample of n=82 C of I students found 30 with brown eyes.

n = 82

x = 30

H_0:p=0.45\\ H_a:p\neq0.45

Now to find z statistic we will use one sample proportion test

\widehat{p}=\frac{x}{n}

\widehat{p}=\frac{30}{82}

\widehat{p}=0.365

Formula of test statistic =\frac{\widehat{p}-p}{\sqrt{\frac{p(1-p)}{n}}}

                                      =\frac{0.365-0.45}{\sqrt{\frac{0.45(1-0.45)}{82}}}

                                      =-1.547

So,  the z-statistic for this test is -1.547

Now refer the z table for p value .

p value = 0.0618

The P-value of the test is  0.0618

Hence the z-statistic for this test is -1.547 and P-value of the test is  0.0618

6 0
3 years ago
3)
Y_Kistochka [10]

Step-by-step explanation:

Because the sentence is speaking that he has done already so we will use the past verb ran

Rick says he has ran two miles already

5 0
3 years ago
Read 2 more answers
Similarity and altitudes in right triangles
Aleks04 [339]

Answer: First I suggest that you write out the all the proportions which govern the 3 right triangles involved.

Once you do that you will find this one:

PQ/PS =PR/PQ

PR=PS+SR

Substitution will give you this quadratic:PQ2=PS2+PS*SR

144=PS2+7PS which has only one solution which make sense, namely 9

Then QS=sqrt(144-81)

Step-by-step explanation:

5 0
2 years ago
What is The sum of 50
lara [203]

Calculating the sum of 1 through 50: 50 x 51/2 = 25 x 51 = 1275.

3 0
4 years ago
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