If it is known that the percentage of successful students is 75%, and you take a sample of 15 students, calculate 1. The probability of having 10 successful bears 2. The probability of success of more than 13 students 3. variance

Q: Two groups of students reported mean weights of 162 kgs and 148 kgs respectively. When would the…

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Q: The mean of 5 observations is 4.4 and the variance is 8.24. If three of the five observations are…

A: Given: Number of observations (n) = 5 Mean x¯=4.4 Variance (s2) = 8.24 The three observations are 1,…

Q: A group of nutritionists is hoping to show that a new soybean compound has more protein per gram…

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Q: Suppose a population has three values 13, 17 and 24. What is its variance?

A: Given: n=3 The mean of the data is obtained as below: Mean=∑xn=13+17+243=543=18 The mean is 18.

Q: In a series of 5 observations, the values of mean and variance are 4.4 and 8.24. If three…

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Q: 4. Assume, you throw (shot) a basketball until you make the basket r times. Assume, your chance of…

A: Consider the following notations, X=number of successesp=probability of single successq=probability…

Q: A researcher has collected the following sample data: 3, 5, 12, 3, 2. The mean of the sample is 5.…

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Q: Give conditional variance.

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Q: there sufficient evidence to indicate that the average diameter of the tendon for patients with…

A: from the given information : population mean,μ= 5.96 sample size, n = 31 sample mean, x̄ = 9.5…

Q: In a 25-Question multiple-choice, there are five possible answers of which one is correct. Let X:…

A: X=number of correct answers  n=number of trials=25 p=probability of success= 1/5 =0.2 [because each…

Q: A report from the National Center for Health Statistics for 2010 showed that 20% of the adult…

A: The objective of this question is to find the average number of adult smokers in a sample of 25…

Q: A researcher calculates the variance of her sample to be s = -6. , what would you tell the…

A: Here's the explanation for this as follows; The sample variance, s², is used to calculate how varied…

Q: A researcher has collected the following sample data: 3, 5, 12, 3, 2. The mean of the sample is 5.…

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Q: 8. Two baseball player in your team has same mean number of score. Player 1 has higher variance than…

A: If two baseball players have the same mean number of scores, but different variances, it means that…

Q: ls. Find the mean, variance and

A: To find: 1).Mean 2).Variance 3).Standard deviation

Q: A. B. O n = 28, X = 118, s = 10.0 n=25, X = 112, S = 12.0 Find the variance of A and B

A: n=28 , x¯=118   ,   s=10.0

Q: 2. If the mean and variance of a Binomial distribution are 9 and 6 respectively, find the number of…

A: Step 1: Start with the formulas for mean and variance of a Binomial distribution:Mean (μ) =…

Q: Suppose that you have obtained data by taking a random sample from a population. Before performing a…

A: For a random sample that is selected from a population, the following steps have to be done in order…

Q: The mean of 5 observations is 4.4 and the variance is 8.24. If the three of the five observations…

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Q: Population 1 has a mean of 20 and a variance of 100. Population 2 has a mean of 15 and a variance of…

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Q: A 10-year study conducted by the American Heart Association provided data on how age, blood…

A: Given Information:

Q: What is the formula for calculating the variance of a set of n observations?

A: Objective of this question is that, what is the farmula for variance of n observation.

Q: What is the variance of the following data( 1, 2, 3, 4, and 5)?

A: According to the given information in this question We need to calculate the value of variance

Q: Does it take more time for seeds to germinate if they are near rock music that is continuously…

A: According to the given information in this question There are more than three subparts according to…

Q: The variance of 19, 21, 23, 25 and 27 is 8. The variance of 14, 16, 18, 20 and 22 is: a. Greater…

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Q: In a poisson distributed character, the mean number of events is 6. Find the variance.

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Q: Solve the problem. 15) The probability that a person has immunity to a particular disease is 0.7.…

A: The mean number of people who have immunity in samples of size 22 can be calculated using the…

Q: If 2% of the components produced by a machine are defective. What is the variance of the number of…

A: According to the question, Number of components, n=300 Probability to be defective p =0.02

Q: Things to do: Device a game of chance using a fair die with corresponding winnings and losses. For…

A: Step 1The rolling dice game has winning outcomes if the numbers 1 or 6 appear on the upper face.The…

Q: A different investor decides to invest $8000 in Fund A and $3000 in Fund B. Assuming the amounts…

A: Here's how to proceed:### 1. Investment DetailsYou've mentioned investments of $8000 in Fund A and…

Q: You want to invest in companies belonging to Gispa Group of Companies Inc. so you did some research…

A: Given, Average gain = 0.8% Standard deviation = 0.7%

Q: Assume you did an experiment with 3 groups and 16 subjects per group. The sample variances in the…

A: Given Information Number of Groups = 3 Total subjects = 16 x 3 = 48 s1 = 14 s2 = 16 s3 = 18…

Q: Q6- Assume the probability that a maple tree at age 5 grows less than 140 cm is equal to 0.2. If the…

A: Given Data: Let X represent the height of the maple tree P(x<140)=0.2 σ=81=9

Q: 2. Find the median survival.

A: Let, X be the time to failure of transplanted kidney in months. Given, X follows Weibull…

Q: If it is known that the percentage of successful students is 75%, and you take a sample of 15…

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Q: A sample has a minimum value of 7 and a maximum value of 58 .Estimate its variance.

A: We have to find variance...

Q: A random sample of 85 supervisors revealed that they worked an average of 7.3 years before being…

A: Here USE basic of margin of error and sampling distribution

Q: 80% of beans seeds sprout. Three seeds were planted. Find the distribution of the variable X =…

A: Given, n = 3 Probability that bean seeds sprout: p = 0.80 Probability that bean seeds does not…

Q: Given mean = 50, median = 48 and coefficient of skewness = 1. Find the value of the variance

A: A measure of central tendency is a single value that attempts to describe a set of data by…