Suppose X is a normal random variable with µ = 380 and o = 20. Find the value of: а. Р(X < 405) b. Р(400 < X < 430) с. Р(X > 400)

Q: Find the z-scores having an area of  0.7456 between them in a standard normal distribution

A: We have to find the z scores such that  P(-z &lt; Z &lt; z) = 0.7456

Q: What is the area under the standard normal distribution curve, between z=0 and z=1.77?

A: GIVEN DATA,stanadard normal distribution for standard normal curve x~N(0,1)μ=0σ=1

Q: Find the z-score such that: (a) The area under the standard normal curve to its left is 0.6904 z =…

A: We have to find z score for given data..

Q: Which proportion of a normal distribution is located between z = 0 and z = +1.50?

A: Solution: Here, it is needed to find the proportion of a normal distribution is located between z=0…

Q: The mean in standard normal distribution coincides with z=1. True False

A: It is needed to discuss about the standard normal distribution.

Q: About % of the area under the curve of the standard normal distribution is between z=−2.163z=-2.163…

A: 96.95%

Q: About % of the area under the curve of the standard normal distribution is between z=−2.031z=-2.031…

A:

Q: Find the area under the standard normal distribution curve between  =z0.43  and  =z3.23

A:

Q: Find z-score such that the area under the standard normal curve to its left is 0.7021 Z-Score =

A: The area under the standard normal curve to its left is 0.7021

Q: 8) By using the double integral in polar coordinate, find ,"[S" e-x²+y>dx]dy

A: The double integral in polar coordinates is given by the formula ∬Rf(x,y)dxdy= ∫ab∫g(θ)h(θ)f(rcosθ,…

Q: About % of the area under the curve of the standard normal distribution is between z=−2.713z=-2.713…

A:

Q: Find z-score such that the area under the standard normal curve to its left is 0.8197 z-score =

A: It is given that 0.8197 of the area lies to the left of z. Excel: The z is 0.9142 using the Excel…

Q: Explain how we can generate the values of the normal distribution of average m = 2 and standard…

A: Let X be a random variable such that X~N2,22 Now, using Excel,

Q: find out the z score shaded area  for standard normal curveby using z score table left of z score…

A:

Q: Find the​ z-score such that the area under the standard normal curve to the left is 0.33

A: standard normal distribution Z~N(0,1) to the left of z area  = 0.33 Z = ?

Q: ind that z-score such that the area under the standard normal curve to its right is 0.89

A: The area of 0.89 is to the right of z.

Q: find the 80th percentile of a normal distribution where x=n(50,10)

A: Step 1:Find the 80th percentile of a normal distribution.X∼N(50,10)=X∼N(μ,σ)Step 2:Find the Z-score…

Q: Let z=a be a positive z score in a standard normal distribution. If the area under z&gt;a is 0.4,…

A: Standard normal distribution:A normal distribution with mean (µ) 0 and variance (σ2) 1 is called…

Q: Find z-score such that the area under the standard normal curve to its left is 0.4598 Z-score

A:

Q: How to get area between z and a z in a normal curve? specifically

A: To find the area between two z-scores we will use subtraction. First we will find the area to the…

Q: What is the area under the normal curve if Z>1.08?

A: To find area under the normal curve if Z&gt;1.08 That is P(Z&gt;1.08)

Q: The average value of the residuals is

A: Residual is the error happen in the observation. It is calculated by subtracting the observed and…

Q: Find the area under the standard normal distribution curve to the right of  =z1.87

A: Required probability is P(z&gt;1.87)

Q: The area under the normal distribution curve is always positive even if the z value is negative .…

A: We have to say true or false for given statement:The statement is:The area under the normal…

Q: Find the area under the normal curve to the left of z equals -2 plus the area under the normal curve…

A:

Q: About % of the area under the curve of the standard normal distribution is between z=−0.878z=-0.878…

A: Solution-: We find % of the area under the curve of the standard normal distribution is between…

Q: Find the z-score such that: (a) The area under the standard normal curve to its left is 0.5577 z =…

A: We can find this probability using the Standard normal table or using the MS EXCEL function…

Q: How do I find the area under a standard normal curve that lies between z= -1.28 and z= 1.36?

A:

Q: what is the cumulative area under the standard normal curve between z-score od -1.3 and z-scor

A: P(-1.3&lt;Z&lt;1.6)=?

Q: Find area to the right of 2 for standard normal distribution.b

A: we have to find right of 2.......for standard normal distribution...

Q: Find the z-score such that: (a) The area under the standard normal curve to its right is 0.4589 z =…

A: a) P(Z&gt;z)=0.4589 b) P(Z&gt;z)=0.4901

Q: Find the​ z-score such that the area under the standard normal curve to the left is 0.72

A: Z be a standard normal random variable with mean = 0 and standard deviation = 1i.e. Z~N(0,1)

Q: In standard normal distribution, what is the area between z = 0 and z = - 2.13 under the normal…

A: Given that, the range is -2.13 to 0.

Q: Find the z-score such that 41% of the area under the standard normal curve is to the right of that…

A: From the provided information, The z-score such that 41% of the area under the standard normal curve…

Q: What is the cumulative area under the standard normal curve between z- score -1 and z-score 1 ?

A:

Q: About % of the area under the curve of the standard normal distribution is between z=−0.629z=-0.629…

A: We have to find out given area.. For normal distribution.

Q: What percent of the area under the curve of the standard normal distribution is outside the interval…

A: Given that, Z interval = [-1.4, 1.4]

Q: Find z-score such that the area under the standard normal curve to its left is 0.845 Z-score =

A: According to the given information in this question We need to find the area under standard normal…

Q: Find the area under standard normal distribution curve of more than z=-2

A:

Q: Draw the standard normal curve that corresponds to an area between z = 0 and z = 2. Then, use the…

A: The provided information is as follows:The value of  is lies between 0 and 2.

Q: Find the Z score such that 43.9% of the area under the standard normal curve is below that score.

A: Here we need to determine the z score such that 43.9% of values lie below the particular z score.

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.