Question

#3 The average daily volume of a computer stock in 2011 was muequals35.1 million shares, according to a reliable source. A stock analyst believes that the stock volume in 2014 is different from the 2011 level. Based on a random sample of 30 trading days in 2014, he finds the sample mean to be 25.8 million shares, with a standard deviation of sequals13.8 million shares. Test the hypotheses by constructing a 95% confidence interval. Complete parts (a) through (c) below. (a) State the hypotheses for the test. Upper H 0: ▼ sigma mu p ▼ less than equals not equals greater than 35.1 million shares Upper H 1: ▼ p sigma mu ▼ equals less than not equals greater than 35.1 million shares (b) Construct a 95% confidence interval about the sample mean of stocks traded in 2014. The lower bound is nothing million shares. The upper bound is nothing million shares. (Round to three decimal places as needed.) (c) Will the researcher reject the null hypothesis? A. Do not reject the null hypothesis because muequals35.1 million shares does not fall in the confidence interval. B. Reject the null hypothesis because muequals35.1 million shares does not fall in the confidence interval. C. Do not reject the null hypothesis because muequals35.1 million shares falls in the confidence interval. D. Reject the null hypothesis because muequals35.1 million shares falls in the confidence interval. Click to select your answer(s).

Answer #1

The average daily volume of a computer stock in 2011 was μ=35.1
million shares, according to a reliable source. A stock analyst
believes that the stock volume in 2014 is different from the 2011
level. Based on a random sample of 30 trading days in 2014, he
finds the sample mean to be 28.8 million shares, with a standard
deviation of s=11.1 million shares. Test the hypotheses by
constructing a 95%
confidence interval. Complete parts (a) through (c) below.
Construct...

The average daily volume of a computer stock in 2011 was
muμequals=35.1 million shares, according to a reliable source.
A stock analyst believes that the stock volume in 2014 is different
from the 2011 level. Based on a random sample of 30 trading days
in 2014, he finds the sample mean to be 32.7 million shares, with
a standard deviation of s equals=11.3
million shares. Test the hypotheses by constructing a 95%
confidence interval. Complete parts (a) through (c) below....

The average daily volume of a computer stock in 2011 was mu
equals 35.1 million shares, according to a reliable source. A
stock analyst believes that the stock volume in 2014 is different
from the 2011 level. Based on a random sample of 30 trading days
in 2014, he finds the sample mean to be 29.9 million shares, with
a standard deviation of s equals 14.5 million shares. Test the
hypotheses by constructing a 95% confidence interval.
(b) Construct a...

The average daily volume of a computer stock in 2011 was μ=35.1
million shares, according to a reliable source. A stock analyst
believes that the stock volume in 2014 is different from the 2011
level. Based on a random sample of 30 trading days in 2014, he
finds the sample mean to be 26.5 million shares, with a standard
deviation of s= 14 million shares. Test the hypotheses by
constructing a 95% confidence interval. Complete parts (a)
through (c) below....

The average daily volume of a computer stock in 2011 was
muμequals=35.1
million shares, according to a reliable source. A stock analyst
believes that the stock volume in 2014 is different from the 2011
level. Based on a random sample of
30
trading days in 2014, he finds the sample mean to be
31.7
million shares, with a standard deviation of
sequals=12.5
million shares. Test the hypotheses by constructing a
95 %
(b) Construct a
95%
confidence interval about the...

The average daily volume of a computer stock in 2011 was mu
equals35.1 million shares, according to a reliable source. A stock
analyst believes that the stock volume in 2014 is different from
the 2011 level. Based on a random sample of 40 trading days in
2014, he finds the sample mean to be 27.3 million shares, with a
standard deviation of s= 12.2 million shares. Test the hypotheses
by constructing a 95 % confidence interval. Complete parts (a)
through...

The average daily volume of a computer stock in 2011 was μ=35.1
million shares, according to a reliable source. A stock analyst
believes that the stock volume in 2014 is different from the 2011
level. Based on a random sample of 30 trading days in 2014, he
finds the sample mean to be 31.5 million shares, with a standard
deviation of s=12.3 million shares. Test the hypotheses by
constructing a 95% confidence interval.
State the hypotheses for the test.
H0:...

The average daily volume of a computer stock in 2011 was
muμequals=35.1
million shares, according to a reliable source. A stock analyst
believes that the stock volume in 2014 is different from the 2011
level. Based on a random sample of
40
trading days in 2014, he finds the sample mean to be
30.2
million shares, with a standard deviation of
sequals=13.5
million shares. Test the hypotheses by constructing a
95%
confidence interval. Complete parts (a) through (c) below.

The average daily volume of a computer stock in 2011 was
muequals35.1 million shares, according to a reliable source. A
stock analyst believes that the stock volume in 2014 is different
from the 2011 level. Based on a random sample of 40 trading days
in 2014, he finds the sample mean to be 26.7 million shares, with
a standard deviation of sequals15.4 million shares. Test the
hypotheses by constructing a 95% confidence interval. Complete
parts (a) through (c) below. (a)...

Please show all work for part b:
The average daily volume of a computer stock in 2011 was
muμequals=35.135.1 million shares, according to a reliable
source. A stock analyst believes that the stock volume in 2014 is
different from the 2011 level. Based on a random sample of 30
trading days in 2014, he finds the sample mean to be 26.8 million
shares, with a standard deviation of s=14.8 million shares. Test
the hypotheses by constructing a 95% confidence interval....

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