If Y follows binomial distribution with mean 4 and variance 2. Find P(Y > 1) 0.9610 0.9861 None 0.9576 0.9961

Q: 8. Find the binomial distribution whose : (i) mean is 4 and variance is 3

A: Step 1Step 2 Step 3 Step 4

Q: Suppose X is the time it takes a randomly chosen clerical worker to type and send a standard letter…

A:

Q: Suppose that a distribution of 400 items has mean 130 and standard deviation 5. Find the​ z-score of…

A: Given that.   X~N( μ , ?)   μ=130     , ?=5  , x=143   Z-score =( x - μ )/?

Q: Fourty percent of the students in a class of 100 are planning to go to graduate school, Find the…

A: Answer: From the given data, Sample size(n) = 100 Probability of students planning to go to graduate…

Q: Derive mean and variance of gamma distribution.

A:

Q: P(x) 0.49 0.05 0.32 3 0.07 4 0.07 mean = variance = standard deviation = 9.

A:

Q: Suppose that a random sample of size 20 is taken from a normal distribution with unknown mean and…

A: Sample size, Variance, Sample mean, The posterior distribution: Posterior mean, Posterior variance,…

Q: Consider a data set with a mean raw score of 25 and a variance of 2.25.  If P( y < X < 28 ) =…

A:

Q: researcher wants to measure average cardiovascular health of university students and compare those…

A:

Q: The random variable X has a uniform distribution with values between 11 and 21. What is the mean…

A:

Q: e standard deviation is larger than 110% of the population standard deviation. Correct your answer

A: A random sample is given as, n=22. The mean is , μ=300. The variance is, σ2=255. The probability…

Q: ppose Y follows binomial distribution with mean=20 and variance =7, what is the values a ccess, p?…

A:

Q: Assume thAt scores on a standardized test are known to follow a bell shaped distribution with a mean…

A: L

Q: Suppose a professor uses a normal distribution to assign grades in her math class. • She assigns an…

A: Given: z score Grade &gt;2.2 A &lt;-2 F 0.9 &lt; z&lt;2 B -1 &lt; z&lt; -0.8 D

Q: Determine the Binomial distribution for which the mean is 4 and variance 3 and find its mode.

A:

Q: Compute the standard score (Z-score) for x, when x = 40, the mean of the distribution = 50, and the…

A:

Q: If X is a normal variate with mean 5 and variance 4. Find P ( -1.5 < X < 2)?

A: Given,mean(μ)=5standard deviation(σ)=2

Q: What does the variance of a random variable measure? What is the standard deviation of a continuous…

A: Variance of a random variable measures how far a set of (random) numbers are spread out from their…

Q: What is the mean of the geometric distribution given by

A: It is given that, X is a geometric variate with its pmf, P(x)=3-x = P(x)=(1/3)x ; x=0,1,2,.... We…

Q: Suppose Y is distributed with mean=80 and variance=100. You obtain a large number of samples each of…

A:

Q: Suppose X is a random variable with mean 10 and variance 16. Suppose Y is a random variable with…

A: We have to find correct answer from given options..

Q: Derive variance for gamma distribution?

A:

Q: Suppose that x has a normal distribution with mean ? = 50 and standard deviation ? = 5. Find P(x >…

A:

Q: The distribution of sample variances tends to be a distribution skewed to the right. true or false?

A: When sampling from a normal distribution, by the definition of the Chi-square variate,…

Q: suppose the income of workers at your job follows a normal distribution. if you standardisize their…

A:

Q: Find the standard error of the sample mean such that we have 50 random samples with mean 30 and…

A: Number of random samples,  Mean=30 Standard deviation,

Q: An original population of scores with a mean = 50 and SD = 6 is standardized to create a new…

A: given data  1 represents original population 2 reperesents new distributionμ1 = 50μ2 = 80σ1 = 6σ2 =…

Q: For a binomial variable X if n = 21 and p = 0.5. Find the variance?

A:

Q: Assume the random variable X is normally distributed with a mean of 50 and a standard deviation of…

A:

Q: Suppose y is drawn from a normal distribution with mean 5 and standard deviation 3. Suppose three…

A: Given: Let Y follows normal distribution. Mean of Y = μ=5 Standard deviation of Y = σ=3 Number of…

Q: A random variable is normally distributed with mean 14.2 and standard deviation 18.4. What value is…

A: According to the provided information, mean μ=14.2standard deviation σ=18.4z-score = 3

Q: If the maximит — 1.3, п %3D 150, and Z0.005 2.575, then find the variance %3D variance = 6.2.…

A: Givenmaximum=1.3n=150z0.005=2.575

Q: Suppose X has a normal distribution with mean 30 and standard deviation five. Between what values of…

A: Empirical rules:1) P(μ-σ&lt;X&lt;μ+σ)=68%2) P(μ-2σ&lt;X&lt;μ+2σ)=95%3) P(μ-3σ&lt;X&lt;μ+3σ)=99.7%

Q: The distribution will be approximately a normal curve with mean_____and standard deviation_____ .

A: It is given that Mean = 104 And SD = 18 Sample size n = 100

Q: what is the mean and standard deviation of all z distributions?

A: Z is distributed as a standard normal variable.

Q: Suppose the annual earnings of clinical pharmacists follows a normal distribution. A sample of 30…

A: Given Let n, sample size=30

Q: A national freight delivery service is considering introducing a same-day delivery service at no…

A: In the above question, the sample size of the satisfaction score with ordinary deliveries is 56. And…

Q: (a) Compute a 95% CI for µ (b) Compute a 99% CI for µ. (c) Which of the two intervals has bigger…

A: Xbar=20.1, n=50, variance(sigma^2)=10

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.