Calculate standard deviation from the following data taking eviations from assumed mean 65: Harks : 50 55 60 65 70 75 80 lo. of students: 6 10 14 9. 2 5 18

Q: An insurance company has written 50 policies for ​$125,000​, 100 policies for ​$30,000​, and 250...

A:   we can find n = (50*125000+100*30000+250*10000) = 11750000  

Q: From the chain base index numbers given below, find fixed base index numbers : Year 1995 1996 1997 1...

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Q: A charitable organisation decided to give old age pensions to people over sixty years of age. The sc...

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Q: he manufacturer decides to discard all tablets in the bottom 2.5% of Vitamin C content. a production...

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Q: Q3. In a binomial distribution of k Successes from n trials: The number of different sequences is gi...

A: The number of different sequences is given by kCn is TRUE.  So, Statement | is TRUE.

Q: In order to get toys in its stores by October, Specialty places one-time orders with its manufacture...

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Q: Listed below are amounts (in millions of dollars) collected from parking meters by a security servic...

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Q: productivity at work and wants to use a correlation coefficient.  However, when the researcher plots...

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Q: TOPIC: Problem Solving on Permutation 1. Analyze and answer the given questions. a. How many ways ...

A: There are 12 books.  Formula: nCr= n!/r!*(n-r)! We have 12C2= 66 ways of choosing 2 books for A. The...

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Q: Ten competitors in a beauty contest are ranked by three judges in the following order : Ist Judge 2n...

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Q: The price index and quantity index of a commodity were 120 and 110 respectively in 2005 with base 20...

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Q: Question II: Show that in the case of the single analysis of frequency and severity, the credibility...

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Q: 1.A bag of candy was opened and the number of pieces was counted. The results are shown in the table...

A: Ans#1- Given, a bag of candy was opened and the number of pieces was counted. Color Frequency R...

Q: answer e f g h i

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Q: Q. 8. Calculate the mean from the following data: Marks below : 10 20 30 40 50 No. of students : 15 ...

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Q: In an entrance test for admission 900 students appeared. Their average marks were 50 and standard de...

A: Given that  n=900 Mean=μ=50 Standard deviation=σ=20

Q: Carl is conducting a research study and finds a significant positive correlation between a state's p...

A: It is given that association between state's per capita consumption of mozzarella cheese and the num...

Q: Example Obtain the median for the following frequency distribution : 6 x: 1 2 3 4 7 8 9. f: 8 10 11 ...

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Q: The life-time in hours of a certain electrical equipment has the normal distribution with mean - 80 ...

A: We hsve to find given probability using z table.

Q: b) The stem and leaf below show the amount of magnesium found in a brand of bottled water in milligr...

A: b) The stem-and-leaf plot shows the amount of magnesium found in a brand of bottled water in milligr...

Q: based on an article published in Toronto, the total response of a 911 call until the fire fighter ar...

A: Mean = ΣXi/N Sum(Xi)=   (4+8+10+5+6+4+12+15+16+7+6) =93 N= 11 Mean = 93/11 = 8.455

Q: Calculate combined mean from the following information. Total no. of boys = 50 %3D Mean weight of bo...

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Q: Amend the following table and locate the median from amended table. Also measure the magnitude of th...

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Q: Compute co-efficient of correlation from the following given results: x =10, Edx = 0. Edy = 0, E(x-K...

A: We have given that  ∑(xi - x-)2 = 1350 , ∑(yi - y-)2 = 2180 ∑(xi - x-)(yi - y-) = 1590 I want to fin...

Q: Q. 6. Calculate Karal Pearsons co-effícient of correlation from the following given data. (i) Sum of...

A: Givensum of deviations of x (∑x)=5sum of deviation of y(∑y)=4sum of square of deviation of x(∑x2)=40...

Q: “The rapid growth of video game popularity has generated concern among practitioners, parents, schol...

A: Given: r=-0.34n=72α=0.01

Q: Stock of a branded product at a local shop is being replenished regularly throughout the day. Demand...

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Q: The number of potholes in any given 1 mile stretch of freeway pavement in Pennsylvania has a bell-sh...

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Q: Find the test statistic for a proportion "p" given the following information. Malloree ordered 15 p...

A: Givensample size(n)=15x=2p^=xn=215=0.1333

Q: Explain the difference between absolute and relative dispersion. If 20 is subtracted from every obse...

A: * SOLUTION :-  From the given information the answer is provided below.

Q: If a seed is planted, it has a 60% chance of growing into a healthy plant. If 8 seeds are planted, ...

A: We have given that  Number of trials n=8 Success of probability p =0.40 Failure of probability q= 0....

Q: Q. 6. Calculate Karal Pearsons co-efficient of correlation from the following given data. (i) Sum of...

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Q: An investigation of the relative merits of two kinds of flashlight batteries showed that a random sa...

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Q: In a survey of a group of​ men, the heights in the​ 20-29 age group were normally​ distributed, with...

A: From the provided information, Mean (µ) = 67.2 Standard deviation (σ) = 4.0 X~N (67.2, 4.0)

Q: Calculate Karl Pearson's coefficient of correlation from the following data and interpret its value ...

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Q: a) What is the probability that a randomly selected individual is 45 to 54 years of age, given the i...

A: given data; Purchase likelihood 18 - 34 35 - 44  45 - 54 55+ Total More likely 232 353 366 400 ...

Q: A variable is normally distributed with mean 18 and standard deviation 5. Use your graphing calculat...

A: Let X be the random variable from normal distribution with mean (μ) = 18 and standard deviation (σ) ...

Q: Q8. This is a continuation of Question 7. Late 0.6 Rain Not Late 0.7 0.7 No Rair Late What is the Pr...

A: Given that P (R') =0.7 , P ( L/R ) = 0.6 , P ( L'/R') = 0.7 P (L ) = ? what is the probability that ...

Q: answer e f g h i

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Q: Judge and Cable (2010) report the results of a study demonstrating a negative relationship between w...

A: We have given that  Weight 4 5 3 2 1 3 1 5 Income 151 88 52 73 49 92 56 143 Then we have to ...

Q: Q3. Given the Venn Diagram and its Carroll Diagram: wwm w Prob. Venn Diagram Incomplete Carroll diag...

A: The diagram shows the probability Venn diagram and Carrol diagram.

Q: If you roll a pair of dice, what is the probability that (at least) one of the dice is a 4 or the su...

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Q: What is the shape of this graph?

A: Given that  The histogram 

Q: The length of bolts produced in a machine shop are normally distributed with mean lengtn 11.8cm. A b...

A: Given that  Mean=11.8cm A bolt that is 12.033cm long is in the 99th percentile compared to all other...

Q: A mail-order company business has six telephone lines. Let X denote the number of lines in use at a ...

A: Given that  Probability mass function of X is  x 0 1 2 3 4 5 6 p(x) 0.11 0.15 0.20 0.25 0.19 0....

Q: Find the standard deviation of the observations 5, 11, 18, 25 and 41, using mutual differences betwe...

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Q: Q. 1. Fit a straight line trend by least square method from the following data : Value of X : 1 2 3 ...

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Q: Q8. This is a continuation of Question 7. Late 0.6 Rain Not Late 0.7 0.7 No Rair Late What is the Pr...

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Q: The correlation between happiness and _______ is the strongest correlation in this study. Group of a...

A: The given output shows the results of a correlation analysis, examining the relationships between ha...