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Answer:
Question 1: The most correct option is option D, which is 0.0133
Question 2: Her data is a random sample from the population of interest.
Explanation: For the first question;
Standard error I the error in the standard deviation. To calculate standard error the formula is used.
S.E = Sd/√n
S.E = standard error
Sd= standard deviation = 0.2
n = number of occurrence = 180
The proportion of the regular users of vitamin among the 180 people is the standard deviation between them.
Using equation above.
S.E = 0.20 ÷ √180 =
0.20 ÷ 13.42 = 0.0149
S.E is 0.0149, when compared to the options, the most correct option is 0.0133, because the question states the answer to be approximately to which of the option.
QUESTION2:
Her research will have much error, because she chooses the car to count. Therefore the research procedure has not satisfied the process that will produce an accurate result. Since she has choosed the street to be her population of interest, all the cars in the street should be counted.
This is not a randomized controlled research, so selection of cars to count is not necessary.
Answer:
Scientific/technical evidence
Explanation:
When an advertiser cites technical information, such as the results of laboratory studies, in an advertisement, a scientific/technical evidence style of execution is being used. This information is much important for the customers for certain products and services. For example, Toothpaste making companies use to highlight that their toothpaste has been approved by certain dental associations and some highly useful and recommended chemicals also present in their toothpaste which are very useful for the protection of teeth and gums. Likewise, when shampoo making brands highlight use of certain chemicals in their ads etc.
Installing a security system is an example of an improvement operating expense. Option B. This is further explained below.
<h3>What is security system?</h3>
Generally, a security system is simply defined as a system of security when someone attempts to break in, an electrical gadget sends off an alert.
inconclusion, An example of an improved operational expenditure is the installation of a security system.
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