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

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 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 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 the​ z-scores for which 25​% of the​ distribution's area lies between −z and z.

A:

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: Find the area above 27 for a N(15,5) distribution.

A:

Q: Find the​ z-scores for which 88​% of the​ distribution's area lies between −z and z.

A: The z-scores for 88% of the​ distribution's area lies between, 1-α=0.88α=0.12α2=0.061-α2=0.94 The…

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: B. C DX Days wit ne Pfizer Moderna 3 Count Mean Median DEVSQ(SS) VAR.S (s') STDEV.S (s) T.TEST 636…

A: Formulating Hypothesis : Null : There is no difference between the two samples Alternate : There is…

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 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​ z-score that has 64.4​% of the​ distribution's area to its right.       The​ z-score is…

A:

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: 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 area under the normal curve to the left of z= -1.56 plus the area under the normal curve to…

A:

Q: The diameter X in inches of a certain brand of tennis balls has normal distribution with mean μ =…

A: Given:  X ~ N(μ = 2.65,  σ 2= .0182)   Part a: Since acceptable balls have diameters between 2.62…

Q: the​ z-scores for which 80​% of the​ distribution's area lies between −z and

A: To find the z value, use the standard normal table to find the z-score which cuts off an area of…

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.