Instruction: Please answer all the questions correctly. One of the values in a normal distribution is 43 and its z-score is 1.65. If the mean of the distribution is 40, what is the standard deviation of the distribution? a. 0.55 b. -1.82 c. 1.82 d. -0.55

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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Instruction: Please answer all the questions correctly.
One of the values in a normal distribution is 43 and its z-score is 1.65. If the mean of the distribution
is 40, what is the standard deviation of the distribution?
а. 0.55
b. -1.82
с. 1.82
d. -0.55
Which of the following situation uses descriptive statistics?
a. From the past figures, MITIS population will reach 2000 in the year 2025.
b. After tossing a coin and getting a head, it will be tail on the next toss.
c. There is a relationship between smoking cigarettes and getting emphysema
d. The average age of students in statistics class is 17 years.
A researcher wants to determine the mean income of adults in a particular state. She decides to take
a random sample of 1525 citizens with a driver's license from the registry maintained by the
Department of Motor Vehicles in that state, and record their incomes. Which one of the following
statements is NOT correct?
a. People who had recently moved from another state may not yet be included in the DMV registry.
b. The sample would be biased since some people without a license may be too poor to own a car
and others may choose to use public transportation
c. Taking a bigger sample from the registry would solve any problems with possible bias
d. The sample would not be representative of adults, since teenagers would be included in the
sample.
In which group can the whole population be used as the sample?
a. All former and present students of a University
b. All students in a class
C. All people in a country
d. All grade 6 students in a region
The number of calls that a call center agent receives in a day is an example of what type of data?
a. discrete
b. nominal
C. continuous
d. hualitative
Transcribed Image Text:Instruction: Please answer all the questions correctly. One of the values in a normal distribution is 43 and its z-score is 1.65. If the mean of the distribution is 40, what is the standard deviation of the distribution? а. 0.55 b. -1.82 с. 1.82 d. -0.55 Which of the following situation uses descriptive statistics? a. From the past figures, MITIS population will reach 2000 in the year 2025. b. After tossing a coin and getting a head, it will be tail on the next toss. c. There is a relationship between smoking cigarettes and getting emphysema d. The average age of students in statistics class is 17 years. A researcher wants to determine the mean income of adults in a particular state. She decides to take a random sample of 1525 citizens with a driver's license from the registry maintained by the Department of Motor Vehicles in that state, and record their incomes. Which one of the following statements is NOT correct? a. People who had recently moved from another state may not yet be included in the DMV registry. b. The sample would be biased since some people without a license may be too poor to own a car and others may choose to use public transportation c. Taking a bigger sample from the registry would solve any problems with possible bias d. The sample would not be representative of adults, since teenagers would be included in the sample. In which group can the whole population be used as the sample? a. All former and present students of a University b. All students in a class C. All people in a country d. All grade 6 students in a region The number of calls that a call center agent receives in a day is an example of what type of data? a. discrete b. nominal C. continuous d. hualitative
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