Question
In: Statistics and Probability
Suppose now that Maria takes a new random sample of a different size. She computes the...
Suppose now that Maria takes a new random sample of a different size.
She computes the resulting 96% confidence interval to be (2.33, 2.75) oz. It is known that the distribution of the amount of ice cream it takes for all Maria's customers to get a brain freeze is symmetric, unimodal, and has a standard deviation of 1.6 oz.
Calculate the sample size used to compute the above confidence interval. Report your answer as a number (no symbols), and round up to the nearest integer (whole) number.
Solutions
orchestra answered 2 years agoRelated Solutions
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Suppose that a random sample of size 64 is to be selected from a
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40 Correct: Your answer is correct. σx = 2 .625 Correct: Your
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Suppose that a random sample of size 64 is to be selected from apopulation with...
Suppose that a random sample of size 64 is to be selected from a
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technology.)(a)What are the mean and standard deviation of thexsampling distribution?μxσx=(b)What is the approximate probability thatxwill be within 0.5 of the population mean μ? (Round
your answer to four decimal places.)(c)What is the approximate probability that x will differ
from μ by more than 0.8? (Round your answer to four
decimal places.)
Suppose that a random sample of size 64 is to be selected from a population with...
Suppose that a random sample of size 64 is to be selected from a
population with mean 40 and standard deviation 5.
a) What is the approximate probability that x will differ from μ
by more than 0.8? (Round your answer to four decimal places.)
A Physics teacher takes a random sample of size 5 from his students. Their marks in...
A Physics teacher takes a random sample of size 5 from his
students. Their marks in a written test (x)
and a practical test (y) are given in the following table.
Student
A
B
C
D
E
X
11
14
16
12
15
Y
9
12
14
13
15
(i) Find the product moment correlation coefficient. [3]
(ii) Test, at the 5% significance level, whether there is
evidence of positive correlation. [4]
The teacher takes a second random sample, this...
Suppose a simple random sample of size nequals200 is obtained from a population whose size is...
Suppose a simple random sample of size nequals200 is obtained
from a population whose size is Upper N equals 15 comma 000 and
whose population proportion with a specified characteristic is p
equals 0.6 . (a) Describe the sampling distribution of
ModifyingAbove p with caret. Choose the phrase that best describes
the shape of the sampling distribution below. A. Approximately
normal because n less than or equals 0.05 Upper N and np left
parenthesis 1 minus p right parenthesis less...
1. Suppose that a random sample of size 64 is to be selected from a population...
1. Suppose that a random sample of size 64 is to be selected
from a population with mean 40 and standard deviation 5.
a. What is the mean of the ¯xx¯ sampling distribution?
b. What is the standard deviation of the ¯xx¯ sampling
distribution?
c. What is the approximate probability that ¯xx¯ will be within
0.5 of the population mean μμ?
d. What is the approximate probability that ¯xx¯ will differ
from μμ by more than 0.7?
2. A Food...
Suppose 55% of the doctors in America are dentists. If a random sample of size 405...
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Suppose a simple random sample of size n=75 is obtained from a population whose size is...
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A) Determine the standard deviation of the sampling distribution
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B) What is the probability of obtaining x=33 or more individuals
with the characteristic? That is, what is P(p ≥0.44)? (Round to
4 decimals)
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