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MariettaO [177]
3 years ago
8

Use the even/off identities to verify the identity

Mathematics
1 answer:
g100num [7]3 years ago
7 0
I sent the solution along with explanations.

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48% of their readers own a particular make of car. A marketing executive wants to test the claim that the percentage is actually
oksian1 [2.3K]

Answer:

There is no sufficient evidence to support the executive claim

Step-by-step explanation:

From the question we are told that

     The  population proportion is  p =  0.48

      The  sample proportion is  \r p  =  0.45

       The sample  size is  n  =  300

       The  level of significance is \alpha  =  0.02

The null hypothesis is  H_o  :  p=  0.48

The  alternative hypothesis is  H_a  :  p \ne  0.48

   Generally the test statistics is mathematically evaluated as

           t =  \frac{\r p  -  p  }{ \sqrt{ \frac{p(1 -  p )}{n} } }

=>        t =  \frac{0.45   -  0.48   }{ \sqrt{ \frac{0.48 (1 -  0.48 )}{300} } }

=>       t =  -1.04

The  p-value is mathematically represented as

     p-value  =  2P(z  >  |-1.04|)

Form the z-table  

                 P(z  >  |-1.04|)  =   0.15

=>   p-value  =  2 * 0.15

=>   p-value  = 0.3

Given that  p-value  >  \alpha  we fail to reject the null hypothesis

   Hence we can conclude that there is no sufficient evidence to support the executive claim

5 0
3 years ago
Volume is always measured in square units. True False
bogdanovich [222]
Hello,

The answer is option B "false".

Reason:

The answer is false because the volume can be measure in anyway for example: feet, yards.

If you need anymore help feel free to ask me!

Hope this helps!

~Nonportrit
4 0
3 years ago
Read 2 more answers
What is the discriminant of the polynomial below? 2x^2+3x-7
zysi [14]

Answer:

Step-by-step explanation:

2x2+3x-7

the discriminant is : b²- 4ac   a=2   b=3  c= -7

3²- 4(2)(-7)   .... continu

6 0
3 years ago
Can someone help me with this question? I’ll mark brainliest if you answer!!!
USPshnik [31]

Answer:

The cordinate is (7,6)

Step-by-step explanation:

First you count how many squares (units) until you are directly under P. Then you cound how many squares up it is till you get to P.

Have an amazing day!

Please rate!

6 0
3 years ago
Erica buys a new backpack that has an original price of $50. She uses a coupon that saves her 20% off the original price. How mu
sattari [20]
First you find 10% of 50 which is 5 and then to find 20% you just double that amount, 20%= $10.
8 0
3 years ago
Read 2 more answers
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