B. Find the probabilities on a standard normal curve. 1. P( z>-1.32) 2. P( z< 0.45)

Q: Suppose the random variable Z follows a standard normal distribution. Then the value of P (Z>-1.00)…

A: P(z&gt;-1.00)=?

Q: For a standard normal distribution, find: P(-1.79 < z < 1.27)

A:

Q: For a standard normal distribution, find: P(z < -1.04)

A: Here,  z ~ N(0,1) To find, P(z&lt;-1.04) We know,  normal distribution is a continuous distribution.…

Q: j) What is the probability that X is within 1 standard deviation of its expected value?  k) What is…

A:

Q: For a standard normal curve, find the probability a value has a z-score less than -2.

A: Standardized z-score:   The standardized z-score represents the number of standard deviations the…

Q: For a standard normal distribution, the probability of obtaining a z value of less than 1.6 is

A: Draw the normal curve and shade the area to the left of z=1.6.

Q: Find the value of Z from the standard normal table such that the probability between Z and –Z is…

A: here given ,  probability between Z and –Z is 0.9802  so p(-Z &lt;z &lt; Z ) = 0.9802

Q: For a standard normal distribution, find: P(-3.59 < z <.05)

A: Given z be the standard normal variable. We need to find p(-3.59&lt;z&lt;0.05)

Q: Find  the following probability for a normal distribution Include the 0 before the decimal point…

A: Obtain the probability of z less than 2.14. The probability of z less than 2.14 is obtained below:

Q: 2. Use TABLEA to find the PROPORTION of observations from a STANDARD NORMAL DISTRIBUTION that…

A:

Q: In a standard normal curve, if P(z>n) = 98.81%, what is the value of n? A -1.22 B -2.26 2.26 1.22

A:

Q: The table on the last page displays the cdf for continuous random variable X, which has a mean of 1…

A: We know, the median divides the data into two equal parts, therefore, If PX≤x=PX≥x=0.5, then x is…

Q: For a standard normal distribution, find: P(-2.76 <z<2.32)

A: The z values are -2.76 and 2.32.

Q: For a standard normal distribution, find c if P(z < c) = 0.1035 с —

A:

Q: Draw a graph for the standard normal distribution. Label the horizontal axis at values of−3, −2, −1,…

A:

Q: a. Above a z-score of 1.22 b. Below a z-score of -83 c. Below a z-score of 1.39

A: Our aim is to find the following :  a. P(Z&gt;1.22) b. P(Z&lt;-0.83) c. P(Z&lt;1.39) As per our…

Q: determine the proportion of the standard normal distribution that lies between the following. z =…

A: Draw the normal curve and shade the area between z=-1.50 and z=1.50. The required shaded area under…

Q: Q5. The mean and standard of the weights of identical concrete specimens are 150 and 45 lb…

A: GivenMean(μ)=150standard deviation(σ)=45sample size(n)=50

Q: Find the probability of the following using the Standard Normal distribution (μ = 0, σ 1). a)…

A: We have to find out given probabiity..

Q: For a standard normal distribution, find: P(z > -2.84) Express the probability as a decimal rounded…

A: Obtain the probability of z greater than –2.84.   The probability of z less than –2.84 is obtained…

Q: Find the probability using the normal distribution. P (0 <= < 2.01)

A: Given Data: Z is the standard normal distribution

Q: Q5. The diameter of contact lenses has a mean of 1 cm and a standard deviation of 0.02 cm. If you…

A: From the provided information, Mean (µ) = 1 cm Standard deviation (σ) = 0.02 X~N (1, 0.02)

Q: 2. Let x be a normal distribution with mean u and standard deviation a.What is the z score that…

A:

Q: Obtain the following probability for the standard normal distribution. Enter the exact answer. P(Z…

A: The mean and standard deviation of the standard normal distribution are 0 and 1.

Q: For a standard normal distribution, find: P(z < 2.27) Express the probability as a decimal rounded…

A: Using standard normal distribution we find the probability.

Q: Use R to determine P(3.1<ỹ<5.1) for a Normal distribution with a mean of 4.3 and a standard…

A: Use R programming

Q: 9. Find the probability that a piece of data from a standard normal distribution will have a…

A: a) Probability that a piece of data from a standard normal distribution will have standard score…

Q: For a standard normal distribution, find: P(-2 < z < -0.09)

A: Normal distribution is a continuous distribution which has many real life applications. Normal curve…

Q: Q6/ Find the probabilities that a random variable having the standard normal distribution will take…

A: Some  helpful formulas:    (i) P(z&lt;-a)=P(-∞&lt;z&lt; 0)-P(0&lt;z&lt; a)…

Q: For a standard normal distribution, find: P(-1.49 z < -1.12)

A: he PDF of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: For a standard normal distribution, find: P(z > -2.24) Express the probability as a decimal rounded…

A: We have given that  Z= - 2.24 Zscore=(x-mu)/sigma

Q: Q4// The number of orders that a mail-order service receive in a day has approximately a normal…

A: Let X denotes the number of orders in a day. Given that X follows N(mean = 500, SD = 30), then Z =…

Q: A normal distribution has p = 20 and o = 4. Which is the probability of randomly selecting a score…

A: Given that : Mean = 20     ,      S. D = 4 X = 25  Z  score =   ( X - mean) / S. D

Q: e probability of randomly selecting a z-score greater than z = +1.25 from a normal distribution?…

A: You can find the required area by using the standard normal table.  Now,

Q: For a Normal Distribution, what's the probability of selecting a z-score between z = 0.9 and z =…

A:

Q: For a standard normal distribution, find: P(z < -0.22) Express the probability as a decimal rounded…

A: We have to find P(z&lt;-0.22)  Graphically,  We have to find shaded area.

Q: Find the indicated probability using the standard normal distribution. P(z1.82)

A: P(z&lt;-1.82 or z&gt;1.82)=?

Q: Only question D.

A: The normal distribution:A continuous random variable X is said to follow normal distribution with…

Q: Assume that we have two normal distributions both with means 0 and standard deviations σ1 and σ2. If…

A: We are given two normal distributions with mean = 0 and standard deviations σ1 and σ2.

Q: Let X distributed as a Normal random variable with a mean of 15 and a standard deviation of  3. A)…

A: Solution: A. Let X be the random variable. From the given information, X follows normal distribution…

Q: For a standard normal distribution, find: P(z< 1.7)

A: the PDF of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: Find the probability for a normal distribution p(-0.80

A: In given question does not mention that Z is either &lt; or &gt; Now , I'm going to solve for the…

Q: Assume that X has a normal distribution. The mean is μ=15.2 and the standard deviation is σ=0.9.…

A: Given Information: Assume that X has normal distribution.

Q: Suppose n =42 and p =0.34 Can we approximate p by a normal distribution? Np=        Nq=

A: Given data, n=42 p=0.34

Q: Let X distributed as a Normal random variable with a mean of 15 and a standard deviation of  3. A)…

A: It is given that:

Q: d) For a standard normal distribution, find the probability a score is lower than 2.37 standard…

A: d) A standard normal variable z follows normal distribution with mean 0 and standard deviation 1.

Q: 7. Assume that the height of people, measured in inches, has a normal distribution with a mean of 65…

A:

Q: 1. The average salary of senior high school teachers is P 21,200. Assume a normal distribution with…

A: (1) Let X denote the salary of high school teachers follows normal distribution. That is, The…

Q: 4. Given a standardized normal distribution (with a mean of 0 and a standard deviation of 1, what is…

A:

Q: Assume a random variable X has a normal distribution with mean 500 and standard deviation 15. Find…

A:

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.