What percentage of exams will have scores between 89 and 92? Blank 1 In your answer, show one (1) digit to the right of the decimal point, for example, 1.0, 1.2. Apply the appropriate rounding rule if necessary. Do not show the % sign. b. If the top 2.5% of test scores receive merit awards, what is the lowest score eligible for an award? Blank 2 In your answer, show one (1) digit to the right of the decimal point, for example, 1.0, 1.2. Apply the appropriate rounding rule if necessary. c. If there were 334 exams with scores of at least 89, how many students took the exam? Blank 3 In your answer, show the whole number. Do not show any digits to the right of the decimal point. Apply the appropriate rounding rule if necessary.
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
Scores on a recent national statistics exam were
Fill in Multiple Blanks
Do calculations in Excel. Do not round intermediate calculations. Round your final answer to the required precision. You can use the "Format Cells..." option in Excel to show the required number of decimal places (Excel will automatically round the number up or down).
- What percentage of exams will have scores between 89 and 92? Blank 1 In your answer, show one (1) digit to the right of the decimal point, for example, 1.0, 1.2. Apply the appropriate rounding rule if necessary. Do not show the % sign.
b. If the top 2.5% of test scores receive merit awards, what is the lowest score eligible for an award? Blank 2 In your answer, show one (1) digit to the right of the decimal point, for example, 1.0, 1.2. Apply the appropriate rounding rule if necessary.
c. If there were 334 exams with scores of at least 89, how many students took the exam? Blank 3 In your answer, show the whole number. Do not show any digits to the right of the decimal point. Apply the appropriate rounding rule if necessary.
Question 35
The monthly earnings of computer programmers are normally distributed with a mean of $4,000. If only 1.7% of programmers have monthly incomes of less than $2,834, what is the standard deviation of the monthly earnings of the computer programmers?
Fill in the Blank
Do calculations in Excel. Do not round intermediate calculations. Round your final answer to the required precision. You can use the "Format Cells..." option in Excel to show the required number of decimal places (Excel will automatically round the number up or down).
In your answer, show the whole number. Do not show any digits to the right of the decimal point. Apply the appropriate rounding rule if necessary. Do not show the $ sign.
The standard deviation of the monthly earnings of the computer programmers is
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