Hi I know that you can’t answer every question but can you answer question 1 please? 3:03The scores on the Wechsler Intelligence Scale for Children (WISC) are thought to beNormally distributed with standard deviation = 10. A simple random sample of 25children is taken, and each is given the WISC. The mean of the 25 scores is = 104.32.Based on these data, what is a 95% confidence interval forA104.32 0.78B104.32 3. 29o104.32 + 3.92D104.32 + 19.602. If in the study of the lifetime of 60-watt light bulbs it was desired to have a margin oferror no larger than 6 hours with 99% confidence, how many randomly selected 60-wattlight bulbs should be tested to achieve this result?A13B)97C)165D42Not within +2 of any of the above.A test of significance was conducted in a study involving a random sample of 25 subjects.Based on the test result using the sample mean, I , it was determined that the P-valuewas equal to 0.028. Which of the following statements about this P-value is TRUE?AIn this situation there is no evidence against the null hypothesis.B)The P-value was calculated under the assumption that the null hypothesis was true.cThe probability of a value of the test statistic at least as extreme as that observed in thisstudy, assuming the altemative hypothesis is true, is 0.028.DAll of the above are true statements.E) Only C is a true statement about the P.value.You wish to compare the prices of apartments in two neighboring towns. You take asimple random sample of 15 apartments in town A and calculate the average price ofthese apartments. You repeat this for 12 apartments in town B. Let represent the trueaverage price of apartments in town A and the average price in town B.What would be the hypotheses for this problem?AH: 0=0, versus H: 0,< 0B)H: 0 = 0, versus H: 0,> 0.H:0-0, versus H: 0#05. Independent random samples were obtained from two Normally distributed populations.The study was conducted in order to test the null hypothesis Ho: i =0i against thealtemative Ha: o; >0; The following is a summary of the sample results:from Population Ifrom Population 2Sample sizeSample MeanSample Standard Deviation2116284.4261.525.415.1To test this hypothesis the value of the test statistic and the P-value are, respectivelyA)3.41. greater than 0.1.B)1.68, between 0.02 and 0.05.C)3.41, between 0.001 and 0.0025.D2.83, between .01 and .025.E) 2.83, greater than 0.05.Use the following to answer questions 6–8:89o00000DashboardCalendarTo DoNotificationsInbox

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Description: Hi I know that you can’t answer every question but can you answer question 1 please? 3:03The scores on the Wechsler Intelligence Scale for Children (WISC) are thought to beNormally distributed with standard deviation = 10. A simple random sample of 2

If the population is normally distributed and the standard deviation of the population is known then…

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1. The scores on the Wechsler Intelligence Scale for Children (WISC) are thought to be Normally distributed with standard deviation -10. A simple random sample of 25 children is taken, and each is given the WISC. The mean of the 25 scores is - 104.32. Based on these data, what is a 95% confidence interval for A104.32 0.78 B104.32 3.29 C104.32 + 3.92 D104.32 19.60

1. The scores on the Wechsler Intelligence Scale for Children (WISC) are thought to be Normally distributed with standard deviation -10. A simple random sample of 25 children is taken, and each is given the WISC. The mean of the 25 scores is - 104.32. Based on these data, what is a 95% confidence interval for A104.32 0.78 B104.32 3.29 C104.32 + 3.92 D104.32 19.60

MATLAB: An Introduction with Applications

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ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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Concept explainers

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.

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Hi I know that you can’t answer every question but can you answer question 1 please?

3:03
The scores on the Wechsler Intelligence Scale for Children (WISC) are thought to be
Normally distributed with standard deviation = 10. A simple random sample of 25
children is taken, and each is given the WISC. The mean of the 25 scores is = 104.32.
Based on these data, what is a 95% confidence interval for
A104.32 0.78
B104.32 3. 29
o104.32 + 3.92
D104.32 + 19.60
2. If in the study of the lifetime of 60-watt light bulbs it was desired to have a margin of
error no larger than 6 hours with 99% confidence, how many randomly selected 60-watt
light bulbs should be tested to achieve this result?
A13
B)97
C)165
D42
Not within +2 of any of the above.
A test of significance was conducted in a study involving a random sample of 25 subjects.
Based on the test result using the sample mean, I , it was determined that the P-value
was equal to 0.028. Which of the following statements about this P-value is TRUE?
AIn this situation there is no evidence against the null hypothesis.
B)The P-value was calculated under the assumption that the null hypothesis was true.
cThe probability of a value of the test statistic at least as extreme as that observed in this
study, assuming the altemative hypothesis is true, is 0.028.
DAll of the above are true statements.
E) Only C is a true statement about the P.value.
You wish to compare the prices of apartments in two neighboring towns. You take a
simple random sample of 15 apartments in town A and calculate the average price of
these apartments. You repeat this for 12 apartments in town B. Let represent the true
average price of apartments in town A and the average price in town B.
What would be the hypotheses for this problem?
AH: 0=0, versus H: 0,< 0
B)H: 0 = 0, versus H: 0,> 0.
H:0-0, versus H: 0#0
5. Independent random samples were obtained from two Normally distributed populations.
The study was conducted in order to test the null hypothesis Ho: i =0i against the
altemative Ha: o; >0; The following is a summary of the sample results:
from Population Ifrom Population 2
Sample size
Sample Mean
Sample Standard Deviation
21
16
284.4
261.5
25.4
15.1
To test this hypothesis the value of the test statistic and the P-value are, respectively
A)3.41. greater than 0.1.
B)1.68, between 0.02 and 0.05.
C)3.41, between 0.001 and 0.0025.
D2.83, between .01 and .025.
E) 2.83, greater than 0.05.
Use the following to answer questions 6–8:
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