For the following, find the area in the appropriate tail of thet distribution. t = -2.418 and df = 42.

Q: Suppose the lengths of human pregnancies are normally distributed with u = 266 days and 0 = 16 days.…

A: The objective of the question is to interpret the meaning of the area under the normal distribution…

Q: find the z-score that has 30.5% of the distributions area to its left.

A: From the given information, PZ<z=30.5%⇒PZ<z=0.305

Q: Find the value of t for a tt-distribution with 12 degrees of freedom such that the area between −t…

A: It is needed to find the value of t for a t-distribution with 12 degrees of freedom such that the…

Q: Find the z-score that best satisfies the condition. 20% of the total area is to the right of z. z =

A:

Q: Find the​ z-score satisfying the given condition. 9​% of the total area is to the left of z.

A: It is given that the area to the left of z is 0.09, that is,

Q: Find to 3 decimal places the value of t for the t distribution for the following.Area in the left…

A: Step 1:Find the t-value for the left tail area is 0.005, and the sample size is 27 .Given…

Q: find the the z score shaded area for given data    (-3.21<z<2.2587)

A: Given probability is P(-3.21&lt;z&lt;2.2587)

Q: Find the z-score if the area to the right of z is .3523 and area to the left of –z is 0.3342.

A: Standard normal score: The standard normal score follows a normal distribution with mean 0 and…

Q: 2. The following table gives the expectation of life C (x) at age x. Calculate expectation of life…

A:

Q: Find the​ z-score satisfying the given condition.   8% of the total area is to the right of z.

A: It is given that the area in the right is 0.08, that is,

Q: Find the value of t for a distribution with 22 degrees of freedom such that the area between -t and…

A: We have given that the degree of freedom 22 and  the area between -t and t is equals 98%.

Q: Given the following pairs of z-values, find the area under the normal curve between each pair of…

A: Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: Find a z score given the cumulative area (area to the left of z) is 0.0250

A: From the provided information, The area to the left of z is 0.0250 that is P (Z&lt;z) = 0.0250

Q: Find the value of t for the t distribution for the following.   Area in the right tail = 0.05 and…

A: Given data:     The given area in the right tail is: A=0.05 The given value of df for the…

Q: For data that is normally distributed, what is the area between the z-values -1.68 and 2.13?…

A: Given: Data that is normally distributed   Find out what is the area between the z-values -1.68 and…

Q: 1. DIRECTION: FIND THE AREA UN 1. Z =-2.13 2. Z = 0.46 3. Z = 3.8 %3D %3D %3D

A: Given that  1) Z=-2.13 2) Z=0.46 3) Z=3.8 Find the area under normal curve  Note: According to…

Q: Find the z-score which separates an area of 0.9000 on the right, from the remaining area on the…

A: According to the given information, we have P-value = 0.9000 Right tailed

Q: Find the value of t for a t-distribution with 27 degrees of freedom such that the area between −t…

A: Given : df=27 P(-t&lt;T&lt;t)=0.99 We want to find the value of T,

Q: Find z score  Area to the right of z= 0.421

A: Given: Area to the right of z is 0.421. The objective is to find the z score.

Q: Calculate the area to the right of 0.57 under the t-distribution with 17 degrees of freedom. Give…

A: Given information : Test statistic , t = 0.57Degrees of freedom , df = 17we have to find the area to…

Q: find out the margin of error for   for given data  [ 4 decimal places ] s=25.35 xbar - 231 n=96…

A:

Q: For normally distributed data, what is the area greater than z = 0.34?

A: Given: Z = 0.34

Q: Find the closest z-value such that 80% of the total area lies to the left of it.

A: P(Z&lt;z)=0.80

Q: Find the indicated​ z-score shown in the graph to the right. area =0.0446

A: The z-score to the right area of 0.0446 is, PZ&gt;z=0.04461-PZ&lt;z=0.0446PZ&lt;z=1-0.0446=0.9554…

Q: Find the values of t that bound the middle 0.8 of the distribution for df = 29. (Give your answers…

A: The degrees of freedom is 29. The confidence level(middle value) is 0.80 then the significance level…

Q: The diameter of rings produced by a machine follows Exponential distribution with λ = 5. Find the…

A: It is given that λ= 5. The mean of the exponential distribution is 1/λ =1/5 =0.2. The variance of…

Q: Find the area of the curve to the right of the following z values. Draw a normal curve with the…

A: According to the property of normal curve, Az≥0=Az≤0=0.5 A0≤z≤a=∅a The area to the right of z=0.78…

Q: Find the area under the curve t-distribution in one tail. 1. df = 7, t = 1.895 2. df = 12, t =…

A: We have to find given area....

Q: Find the z-score where 95% (.95) of the curve is below this z-score and 5% (.05) is above.     Find…

A: It is given that the z-score is Z = ( X - μ )/σ ~ N( 0, 1 ).

Q: Find the value of t for the t distribution with a sample size of 14 and area in the left tail equal…

A: It is given that the sample size n=14 and area in the left tail is 0.10. That is the level of…

Q: (a) Find the t-value such that the area in the right tail is 0.02 with 23 degrees of freedom. (Round…

A: In this given problem, The t table provided by the student is not sufficient because it is giving…

Q: nd the​ z-scores that correspond to the percentage of adult spiders that have carapace lengths…

A: Use the standard normal table, to find the required probability/proportion. Thus, We know that,…

Q: Find the indicated z-score shown in the graph to the right. Area = 0.1711 z=?0

A:

Q: Assuming that the magnitudes are normally distributed, find the percentage of earthquakes with a…

A: The magnitudes follows normally distributed with mean 2.5723 and standard deviation 0.6505 It is…

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.