<h2>
Answer with explanation:</h2>
a) Given : Sample size of students : n =1123
Number of students read above the eighth grade level = 888
Then, Number of students read at or below the eighth grade level =1123-888=235
Then , the sample proportion of tenth graders reading at or below the eighth grade level.:
Since, the best estimate for the population proportion is the sample proportion.
Thus, the estimated proportion of tenth graders reading at or below the eighth grade level = 0.209
b) Significance level :
Critical value :
Confidence level for population proportion:-
Hence, the 90% confidence interval for the population proportion of tenth graders reading at or below the eighth grade level = (0.189,0.229)
The number of three digit numbers which can be determined from the set of numbers as given is; 4
<h3>How many 3 digits numbers can be formed using numerals in the set 3,2,7,9?</h3>
It follows from the task content that the number of 3 digit numbers that can be gotten from the set of numbers given such that there are no repetition is as follows;
= ⁴C₃
= 4.
Ultimately, the number of three digit numbers which can be determined from the set of numbers as given is; 4
Read more on combinations;
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Answer:
76 teenagers went to movies in the past month.
Step-by-step explanation:
The number of teens who went to movie out of every 5 teens = 4
Total teens surveyed = 95
Let, out of 95 teenagers , the teens who went to movie = m
So, the ratio of people who went : who were surveyed = 4: 5
Now, <u>BY THE LAW OF RATIO AND PROPORTIONALITY</u>
<u />
or,
So, m = 76
⇒ 76 teenagers went to movies in the past month.
The radius of a circle is half the length of the diameter so
radius=1.5m
672 I believe
Arent you supposed to multiply them together? Correct me if I’m wrong