Based on the percentage of readers who own a particular make of the car and the random sample, we can infer that there is sufficient evidence at a 0.02 level to support the executive claim.
<h3>What is the evidence to support the executive's claim?</h3>
The hypothesis is:
Null hypothesis : P = 0.55
Alternate hypothesis : P ≠ 0.55
We then need to find the test statistic:
= (Probability found by marketing executive - Probability from publisher) / √( (Probability from publisher x (1 - Probability from publisher))/ number of people sampled
= (0.46 - 0.55) / √(( 0.55 x ( 1 - 0.55)) / 200
= -2.56
Using this z value as the test statistic, perform a two-tailed test to show:
= P( Z < -2.56) + P(Z > 2.56)
= 0.0052 + 0.0052
= 0.0104
The p-value is 0.0104 which is less than the significance level of 0.02. This means that we reject the null hypothesis.
The Marketing executive was correct.
Find out more on the null and alternate hypothesis at brainly.com/question/25263462
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Your answer to question 1: is A
Your answer to question 2: is B
I am not really sure how to answer that.
Answer:
The cost of BBB rated bond will be more than 4.6% and lesser than 7.4%.
Explanation:
In order to calculate the cost of debt for XYZ based on prevailing market rates, we need to calculate first the following steps:
First, we have to calculate the cost of A rated bond using the following formula:
cost of A rated bond= Risk free rate+credit spread on A rated bond
=3.5%+1.1%
=4.6%
Next, we have to calculate the cost of A rated bond using the following formula:
cost of B rated bond= Risk free rate+credit spread on B rated bond
=3.5%+3.9%
=7.4%
Therefore, after having calculated the cost of A rated bond and the cost of B rated bond, we can conclude that the cost of BBB rated bond will be more than 4.6% and lesser than 7.4%.
