3. Given below are the marks obtained by 200 studentsS of a university in statistics pane 50-60 Marks: 40-50 60-70 70-80 80-90 No. of students: 32 42 55 40 31 Draw a histogram and frequency polygon.

Q: Kara has 1010 books on a shelf and decides to move 33 of them to an empty shelf. In how many…

A: Kara has 10 books on a shelf and decides to move 3 of them to an empty shelf. In how many…

Q: approximate 0.954 confidence interval for u, the mean of the gamma distribution. Hint: Use the…

A:

Q: Find the minimum sample size n needed to estimate u for the given values of c, o, and E. c= 0.95, o=…

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Q: Students in our math class were surveyed to see how many have cats and/or dogs. The results are…

A: By using basis probability rule we solve this problem by using the information from the given venn…

Q: The breaking strengths of cables produced by a certain company are approximately normally…

A: Write null and alternative hypothesis

Q: You are given the probability tree diagram below. What is the probability that a person has cancer,…

A: here use baye's rule

Q: We usually write numbers in decimal form (or base 10), meaning numbers are composed using 10…

A:

Q: A personnel manager has found that, historically, the scores on aptitude tests given to applicants…

A: Solution-: Given:  σ=25.86,n=13,x¯=70.92,CI=(57.8665,83.5735) We want to find the confidence level…

Q: In how many ways 5 passengers can sit in a compartment having 16 vacant Example 39. seats?

A:

Q: Q14: A radar unit catches (photographs) over-speeding cars. It is estimated that 25% of the cars…

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Q: In the United States, voters who are neither Democrat nor Republican are called Independent. It is…

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Q: The following probabilities for winning money playing a lottery game are posted on lottery's…

A: 9995 995 95 -5 1/61950 35/61950 116/61950 61798/61950

Q: What is the expected value of your bet

A: here given, you and a friend are playing cards and decide to make a bet. If you draw two clubs in…

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A: P (  person who walks into the store will buy something ) is = ?

Q: A food safety guideline is that the mercury in fish should be below 1 part per million (ppm). Listed…

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Q: 7 people sit around a table how many ways could they be arragned if 2 people cannot sit together .…

A: Given Total no of people=7

Q: In a math class of 30 students, 17 are boys and 13 are girls. On a summative test, 4 boys and 5…

A: Given that  Total students=30 Number of boys=17 Number of girls=13 Boys made A grade=4 Girls made A…

Q: and if a 1 is transmitted, the probability of it being received in error is 0.1. If the output of…

A: here define events I1 = input bit 1 ,  p(I1) = 0.7I0 = input bit 0   , p(I0) = 0.3R1 =…

Q: From a random sample of 81 dates, the mean record high daily temperature in a certain city has a…

A: From the provided information, Sample size (n) = 81 Sample mean (x̄) = 83.54 Standard deviation (σ)…

Q: het are the variance and standard deviation of the sampling distribution of the sample mean if n =…

A: Given that  n=45 , s=13 Find variance and standard deviations of sampling distribution of sample…

Q: And I witnessed to a crime said that the license plate of the getaway car began with the letters T,…

A: Given the letters T, B, and E, but he cannot remember the order. The rest of the plate had the…

Q: Use the data in the table to the right to answer the following questions. Weights (g) of a Sample…

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Q: b. In Covid-19 pandemic, one out of every 500 people of Dhaka city were affected during this month.…

A: It is given that one out of every 500 people of Dhaka city were affected during this month.

Q: type l ovens. A sample of 32 typel ovens has a mean repair cost of S89.74, with a standard st of…

A: Given,For TYPE 1 :sample size (n1) = 32sample mean (x̄1) =  89.74sample standard deviation (s1) =…

Q: d the minimum sample size n needed to estimate u for the given values of c, o, and E. c= 0.98, o =…

A: Given that  Margin of error =E =1 Population standard deviation =5.2

Q: The mean daily production of a herd of cows is assumed to be normally distributed with a mean of 31…

A: Here, mean is 31 and standard deviation is 6.8. We will use z-standard normal distribution.

Q: 2 dice are thrown simultaneously. Wha is the probability that the sum of the numbers on the faces is…

A: When two dice thrown So total no. of possible outcomes will be 6^2=36. These are[…

Q: How many different three-digit numbers can be formed using the digits 1, 5, 9, 7, 4, 8, and 6…

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Q: Fifty students were surveyed about their favorite fruit. The Mango 5 Banana 10 Venn diagram shows…

A: As per our guidelines we are supposed to answer only 3 subpart of any questions so i am solving…

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A: No.of red candies (X) = 10  Total no.of candies (n) = 40 The proportion of red candy is,

Q: 67. In shuffling a pack of playing cards four cards are accidentally dropped. hat is the probability…

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Q: a) What is the marginal distribution of Z2. b) Find P(Z2 <4)

A: here given ,  joint distribution of z1 and z2

Q: 1. The mathematics test results of 40 learners were examined and the results were recorded in the…

A:

Q: Suppose that about 75% of graduating students attend their graduation. A group of 7 students is…

A: Let X be the random variable from binomial distribution with probability (p) = 75% = 0.75 and sample…

Q: Example 3 Draw bar diagram for the following data. Years 1996 1997 1998 1999 2000 2001 Scale (*000)…

A: We have the following data  to draw a bar diagram.

Q: Requires @RISK) Which of the following is true of the Poisson distribution with mean 8?   a. The…

A: Given that  Which of the following is true of the Poisson distribution with mean 8?     a. The…

Q: if 4 cards are selected from a standard deck of 52 cards without replacement, find probability at…

A: From the provided information, Total cards in a standard deck = 52 Total king = 4

Q: In a normal distribution, 99.7% of the data fall within how many standard deviations of the mean? A.…

A: Solution-: In a normal distribution, 99.7% of the data fall within how many standard deviations of…

Q: P(G)= [Choose] P(B)= [Choose ] P(BUY)= [Choose ]

A: Given that  Total marbles=5+3+4+2=14 Red marbles=R=5 Blue marbles=B=3 Green marbles=G=4 Yellow…

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A: Given that the bag contain the 12 different colored marbles. out of this 4 are green , 5 are blue, 1…

Q: 4. Assume it is equally likely that a child is born a boy or a girl. a. Draw a tree diagram and list…

A: Here we have assumed that it is equally likely that child is born a boy or girl

Q: Labor force participation among women rose in the United States between 1975 and 2000 and has beeen…

A: The random variable X follows binomial distribution. We have to find the probability between 48% and…

Q: Let p be the population proportion for the following condition. Find the point estimates for p and…

A: We have given that n = 2091x =4048

Q: b. In Covid-19 pandemic, one out of every 500 people of Dhaka city were affected during this month.…

A:

Q: So far this month he has seen 59 bluejays, 68 black crows, 12 red robins, and 1 cardinal. What is…

A:

Q: A bag contains 6 black and 8 white balls. One ball is drawn at random. What is the probability that…

A: From the provided information, A bag contains 6 black and 8 white balls. Total balls = 6 + 8 = 14

Q: 10.According to the quality control department, 0.5% of products have defect. One thousand products…

A: Given that  n=1000 , p=0.5%=0.005 Find  P(at least 2)

Q: 7.) Lanscaping. A sample of 40-homeowners who recently hired a landscaping service yielded the…

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Q: . Sheldon owns a mango farm and the weight of his mangoes are normally distributed with an average…

A: here  N = 800 n = 50 μ = 200 gramσ = 15 grams

Q: 16 persons shake hands with one another in a party. How many shake hands took place? Select one: O…

A: Calculate using combination formula