Question
In: Statistics and Probability
Below are the data on wages of a random sample of the First National Bank black...
Below are the data on wages of a random sample of the First National Bank black female hourly workers (in dollars per year):
16,015 17,516 17,27416,55520,788
19,312 17,124 18,405 19,090 12,641
17,813 18,206 19,338 15,953 16,904
Find a 90% confidence interval for the mean earnings of all black female hourly workers at First National Bank. Assume that population standard deviation is $1900.
Solutions
orchestra answered 1 year agoRelated Solutions
The data in the table below are the result of a random survey of 39 national...
The data in the table below are the result of a random survey of
39 national flags (with replacement between picks) from various
countries. We are interested in finding a confidence interval for
the true mean number of colors on a national flag. Let X = the
number of colors on a national flag. X Freq. 1 1 2 7 3 18 4 7 5 6
Construct a 95% confidence interval for the true mean number of
colors on national...
The data in the table below are the result of a random survey of 39 national...
The data in the table below are the result of a random survey of
39 national flags (with replacement between picks) from various
countries. We are interested in finding a confidence interval for
the true mean number of colors on a national flag. Let X =
the number of colors on a national flag.
X
Freq.
1
1
2
7
3
18
4
7
5
6
Construct a 95% confidence interval for the true mean number of
colors on national...
National data indicates that 35% of households own a desktop computer. In a random sample of...
National data indicates that 35% of households own a desktop
computer. In a random
sample of 570 households, 40% owned a desktop computer. Does
this provide enough
evidence to show a difference in the proportion of households
that own a desktop?
Identify the appropriate null and alternative hypotheses.
A. H0: p= 0.35 Ha: p ≠ 0.35
B. H0: p = 0.40 Ha:p > 0.40
C. H0:p = 0.35 Ha:p < 0.35
D. H0:p = 0.40 Ha:p ≠ 0.40
The First National Bank of Wilson has 740 checking account customers. A recent sample of 60...
The First National Bank of Wilson has 740 checking account
customers. A recent sample of 60 of these customers showed 36 have
a Visa card with the bank.
Construct the 98% confidence interval for the proportion of
checking account customers who have a Visa card with the bank. (Use
z Distribution Table.) (Round your answers to 3 decimal
places.
Confidence interval for the proportion is between and .
The First National Bank of Wilson has 660 checking account customers. A recent sample of 50...
The First National
Bank of Wilson has 660 checking account customers. A recent sample
of 50 of these customers showed 19 have a Visa card with the
bank.
Construct the 99% confidence interval for the proportion of
checking account customers who have a Visa card with the bank. (Use
z Distribution Table.) (Round your answers to 3
decimal places.)
Confidence interval
_______________ and ________________
The First National Bank of Wilson has 620 checking account customers. A recent sample of 60...
The First National Bank of Wilson has 620 checking account
customers. A recent sample of 60 of these customers showed 28 have
a Visa card with the bank. Construct the 95% confidence interval
for the proportion of checking account customers who have a Visa
card with the bank. (Use z Distribution Table.) (Round your answers
to 3 decimal places.)
Confidence interval for the proportion is between and .
First National Bank Balance sheet Assets &
First National Bank Balance sheet
Assets
Liabilities
Rate-sensitive $20
million $50
million
Fixed-rate
$80 million $50
million
4) Given the above table and assuming that the average duration
of its assets is four years, while the average duration of its
liabilities is three years, then a 5 percentage point increase in
interest rates will cause the net worth of First National to
________ (increase/decline) by ________ (5% /10%/ 15%/ 20%) of the
total original asset value (use...
In 2009, New York First National Bank acquired New Jersey National Bank. In an exchange, New...
In 2009, New York First National Bank acquired New Jersey
National Bank. In an exchange, New York First National Bank issued
three series of preferred stock for New Jersey National Bank's net
assets. Series Senior A (the most senior series), was given to four
of New Jersey National Bank's creditors so that the debt could then
be retired. The four preferred shareholders are listed as follows:
two regional banks, one money center bank, and a non-financial
corporation. Senior Series A...
The Table below shows data of two random samples of employee wages taken from two small...
The Table below shows data of two random samples of employee
wages taken from two small business firms providing the same
service. The issue to be evaluated is whether the average wage in
these two firms is the same. Test this hypothesis at α =
0.05.
Values of Test-Statistics, zo, critical statistic are ?? and the
decision is to ....
Wages from two small business firms
Observation #
Wages in Firm A ($)
Wages in Firm B ($)
Observation #...
A. The data below represent a random sample of 9 scores on a statistics quiz. (The...
A. The data below represent a random sample of 9 scores on a
statistics quiz. (The maximum possible score on the quiz is 10.)
Assume that the scores are normally distributed with a standard
deviation of 1.6. Estimate the population mean with 93% confidence.
6,10,6,4,5,7,2,9,6 6 , 10 , 6 , 4 , 5 , 7 , 2 , 9 , 6 Note: For
each confidence interval, enter your answer in the form (LCL, UCL).
You must include the parentheses...
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