21. According to the local union president, the mean gross incomé óf plumbers in the Salt Lake City area follows the normal probability distribution with a mean of $45,000 and a standard deviation of $3,000. A recent investigative reporter for KYAK TV found, for a sample of 120 plumbers, the mean gross income was $45,500. At the .10 significance level, is it reasonable to conclude that the mean income is not equal to $45,000? Deter- mine the p-value. hark mulch in 50-pound ba

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Q: 24 25

A: The base of the triangle is 24. The hypotenuse of the triangle is 25. The triangle is right angled…

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Q: What is the probability of drawing a face card (Jack, Queen, or King) or a diamond from a standard…

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A: Consider the given division of 668 by 4. The objective of the problem is to perform the division.

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A: We Know that  Ratio is the quantitative relation between two amounts showing the number of times one…

Q: Combination C.  (87,1)

A: Given:              C87, 1 The number of k-combinations from a given set S of n elements can be…

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A: From the given figure:     From the Pythagora's theorem:   Hypotenuse2=Perpendicular2+Base2

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Q: 150 students and 12 teachers in class how many staff members are in school?

A: Given that in a class     Number of students =  150    Number of teachers = 12   Staff means…

Q: 2. Evaluate. 27 3 21

A: Solve by indices property

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A: It is an important part of statistics. It is widely used.

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Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.