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horrorfan [7]
3 years ago
9

In the parallelogram below, W = ?

Mathematics
1 answer:
Ivenika [448]3 years ago
4 0
All angles in a triangle add to 180
so
w+2w+69=180
3w+69=180
3w=111
w=37
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A television network is deciding whether or not to give its newest television show a spot during prime viewing time at night. If
musickatia [10]

Answer:

a. The test statistic for this hypothesis would be z=1.71

b. Critical value at α = 0.10: z=1.282

c. Reject H0, the television network should not keep its current lineup.

d. H0: p ≤ 0.50; HA: p > 0.50

Step-by-step explanation:

We have to performa an hypothesis test on a proportion.

The claim is that the proportion of viewers that prefer the new show is bigger than 50% (meaning that most viewers prefer the new show).

The null hypothesis will state that both shows have the same proportion.

Then, the null and alternative hypothesis are:

H_0: \pi\leq0.50\\\\H_a: \pi>0.5

The sample proportion is p=0.53

p=X/n=438/827=0.53

The standard error of the proportion is:

\sigma_p=\sqrt{\dfrac{p(1-p)}{n}}=\sqrt{\dfrac{0.5*0.5}{827}}= 0.017

Then, the z-statistic can be calculated as:

z=\dfrac{p-\pi-0.5/n}{\sigma_p}=\dfrac{0.53-0.50-0.5/827}{0.017}=\dfrac{ 0.029 }{0.017} =1.706

The critical value for a right tailed test at a significance level of 0.10 is zc=1.282. This value can be looked up in a standard normal distribution table.

As the statistic is bigger than the critical value, it lies in the rejection region. The null hypothesis is rejected. There is evidence to support the claim that the proportion of viewers which support the new show is larger than 0.50.

4 0
3 years ago
craig went out to a restaurant for dinner. he tipped 16% of his bill, which brought the sum of the dinner bill plus the tip to $
olga nikolaevna [1]
The total cost was 116% of the original bill;
Original bill was;
\frac{100}{116} *26.10
= <span>$22.5</span>
5 0
3 years ago
If Yeison can read 5/8 of a manga in 2/3 of an hour, how many can he read in TWO hours ? (I’ll give brainlest or whatever it’s c
iVinArrow [24]

Answer:

1 and 7/8 in two hours

Step-by-step explanation:

4 0
3 years ago
100 points and brainliest for correct answer!
MatroZZZ [7]
Answer B.

∑fx=1637,∑fx
2
=127663,∑f=21
x
ˉ
=Mean=
∑t
∑fx
​
=77.95
σ
2
=
∑f
∑fx
2

​
−(
x
ˉ
)
2
=
21
127663
​
−(77.95)
2
=2.987
σ=1.728
4 0
2 years ago
Max is lifting weights he wants to have 240 lb on the bar how many 15 lb weights should be put on the bar
ipn [44]

Answer:

16

Step-by-step explanation:

240 ÷ 15 = 16

16 x 15 = 240

To lift 240 he would need to put 16, 15 lb weights on the bar

3 0
3 years ago
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