Adult visitors to an amusement park pay $40 for admission, while children are charged $25. Yesterday, a total of 625 people visi
1 answer:
Answer:
Step-by-step explanation:
denotes the number of adult admission tickets sold and
denotes the number of child admission tickets sold.
Cost of an adult admission ticket = $40
Cost of adult admission tickets = $40
Cost of a child admission ticket = $25
Cost of child admission tickets = $25
Total amount paid by 625 people = $19,000
So,
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Answer:
a
The 95% confidence interval is
b
The sample proportion is
c
The critical value is
d
The standard error is
Step-by-step explanation:
From the question we are told that
The sample size is n = 200
The number of defective is k = 18
The null hypothesis is
The alternative hypothesis is
Generally the sample proportion is mathematically evaluated as
Given that the confidence level is 95% then the level of significance is mathematically evaluated as
Next we obtain the critical value of from the normal distribution table, the value is
Generally the standard of error is mathematically represented as
substituting values
The margin of error is
=>
=>
The 95% confidence interval is mathematically represented as
=>
=>