Can somebody help me with this question.

mr. porter owns a house when he first bought the house it was valued at d dollars since then all of the home values in his neigh

Alex17521 [72]

D + 20% of d = Current Value

5 0

3 years ago

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

Which statements about the Commutative Property of Multiplication are TRUE? Select all that apply. A. The property applies to al

musickatia [10]

Answer:

b) The property states that ab is equivalent to b a

Step-by-step explanation:

<em>Commutative property</em>:-

the commutative property , when we multiply two integers , the answer we get after multiplication will remain the same, even if the position of the integers are interchanged.

Let 'a' and 'b' be the two integers , then ab = b a

Example:-

. 1 X 2 = 2 X 1 = 2

. 12 X 5 = 5 X 12 = 60

3 0

3 years ago

Do you have a rope that is 129.25 inches long you could've six pieces from the Rube each piece is 18.5 inches long how long is t

Elan Coil [88]

After you cut off 6 pieces, the rope is 18.25 inches long

3 0

4 years ago

Classify the following expression by degree and term: x^3y + 5xyz A: 3rd degree trinomial B: 4th degree binomial C: 3rd degree b

drek231 [11]

Answer:

4th degree binomial

Step-by-step explanation:

x^3y + 5xyz

Add the exponents on each term

3+1 = 4 1+1+1 =3

The highest power is the degree, so it is a 4th degree

It also has 2 terms so it is a binomial

4th degree binomial

4 0

3 years ago