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2 years ago

I NEED HELP ON THISSSSSS PLEASEEEEE!!!!

Mathematics

1 answer:

pentagon [3]2 years ago

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Each of four test scores in Connie’s class is to be weighted equally. On the first three tests, Connie scored 80%, 90% and 95%.

Zanzabum

Answer:

95%is the answer

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

A national study report indicated that 20.9% of Americans were identified as having medical bill financial issues. What if a ne

Alenkasestr [34]

Answer:

The p-value for this test is 0.22065.

Step-by-step explanation:

We are given that a national study report indicated that 20.9% of Americans were identified as having medical bill financial issues.

A news organization randomly sampled 400 Americans from 10 cities and found that 90 reported having such difficulty.

Let p = proportion of Americans who were identified as having medical bill financial issues in 10 cities.

SO, Null Hypothesis, $H_0$ : p $\leq$ 20.9% {means that % of Americans who were identified as having medical bill financial issues in these 10 cities is less than or equal to 20.9%}

Alternate Hypothesis, $H_A$ : p > 20.9% {means that % of Americans who were identified as having medical bill financial issues in these 10 cities is more than 20.9% and is more severe}

The test statistics that will be used here is One-sample z proportion statistics;

T.S. = $\frac{\hat p-p}{{\sqrt{\frac{\hat p(1-\hat p)}{n} } } } }$ ~ N(0,1)

where, $\hat p$ = sample proportion of 400 Americans from 10 cities who were found having such difficulty = $\frac{90}{400}$ = 0.225 or 22.5%

n = sample of Americans = 400

So, test statistics = $\frac{0.225-0.209}{{\sqrt{\frac{0.225(1-0.225)}{400} } } } }$

= 0.77

Now, P-value of the test statistics is given by the following formula;

P-value = P(Z > 0.77) = 1 - P(Z $\leq$ 0.77)

= 1 - 0.77935 = 0.22065

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3 years ago

How to find the height of a trapezoid if the area is 60 square meters and bases of 8 and 12 meters. Please show your work!

love history [14]

A=h(b+b) divided by 2-how to
A=60(8+12) divided by 2- with numbers
A=600 meters squared-answer

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3 years ago

There are two rows of 8 chairs set up in the library for a puppetshow how many chairs are set up use the distributive property t

laila [671]

It there are 2 rows of 8 chairs all you have to do is add 8+8 which equals 16
Unless it means there are 8 chairs altogether split into 2 even rows then you do 8\2 =4

I would write down both answers if your not sure which one it is :)

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2 years ago

Read 2 more answers

Find the volume of the square pyramid. A. 15 yd B. 25 yd C. 35 yd D. 45 yd

notsponge [240]

45 yd. Area Is BH. the area of the base is 9. Times the height, 5, is 45

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2 years ago

I NEED HELP ON THISSSSSS PLEASEEEEE!!!!​

I NEED HELP ON THISSSSSS PLEASEEEEE!!!!