For a normally distributed population with μ = 90 and o=40, find P(x ≥200). a. 0.003 O a. O b. 0.9970 c. Not enough information O d. 2.75

Q: If r = .20 and sy = 30.42, what is the standard error of the estimate?

A: given data r = 0.20Sy = 30.42standard error of the estimate = ?

Q: If Z~N(0,1), calculate Pr(1.55 < Z < 2.65). You can use Excel. Round your answer to three decimal…

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

Q: If Z~N(0,1), calculate Pr(2.26 < Z < 2.89). You can use Excel. Round your answer to three decimal…

A: Solution: Let Z be the standard normal distribution.

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: A carton of ice cream is taken out of the freezer, and the ice cream’s tem- perature F (in degrees…

A: Given: t(min) F(t)(°F) 0 5.0 2 26.4 4 40.8 6 50.4 8 56.9 10 61.2 12 64.1 14 66.0…

Q: = 13 ould you expect to find the middle 50% of most pregnancies? and raw samples of size 45 from…

A: Given Mu=265 Standard deviation= 13

Q: how did 0.9 become 1.282

A: The mean is 750, standard deviation is 40, and sample size is 50.

Q: If P( − b < z < b) = 0.899, find b. b= Round your answer to two decimal places.

A: Answer:-  Given,  P( -b &lt; z &lt; b ) = 0.899.                 Find b?

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: A popular social media platform has begun offering stock shares to the public. In the past 2 years,…

A: Here, we have: Constant = 2.0583 Coefficient of weeks = 0.0022

Q: Compute a 99%C.I. on average quarter weights 99% C.I for Average Quarter Weight (use 4 decimal…

A: (A) Obtain the degrees of freedom. From the information, given that there is a sample of 50. The…

Q: P(1.15 < Z < 2.77) =

A: X~N( 0 , 1 )   μ=0 , ?=1 (for standard normal distribution)   Z-score =( x - μ )/?

Q: Here are summary stalistics for the weights of Pepsi in rindomy selected cans: = 36, x = n =…

A: From the provided information,Confidence level = 95%

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: uppose IQ scores were obtained for 20 randomly selected sets of twins. The 20 pairs of measurements…

A: Solution:  n= 20 observation The fitted regression equation is  y^=3.27+0.98x Where x is the IQ…

Q: Use two-point linear interpolation or extrapolation to estimate C( t = 0.6 min) assuming that the…

A: The equation is C=3.00exp(-2.00t)=3.00e-2.00t  Where t is the time and C is the concentration .  We…

Q: 8.116 For a t-curve with df = 17, use Table IV to find each t-value. c. to.005 b. fo.025 a. to.05

A: Followings are the Explanation of the question  Use the t table and find the t-critical value  when…

Q: 5 Use Simpson's rule with n = 4 to approximate In(5) 1 dr. %3D %3D 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2…

A: We will find the required value by simpson 1/3 rule for n=4.

Q: The lengths of pregnancies in a small rural village are normally distributed with: μ = 269 0 = 15 In…

A: Given Mean=269 Standard deviations=15 Z=99.7%

Q: Examine the image below and then answer all parts of the question under it. Enter your answers as…

A: a) There are 4 yellow objects in 10 objects.So, P(yellow)=410=0.4b) There are 3 hearts in the 10…

Q: The e half- lite of a ra to actine material 1S lle years. Sunppose we have a 10amg sa, How much of…

A: Given:   T = 110     N0 = 100     t = 30

Q: For a group of individuals all age (x), given: 25% are smokers (s) and 75% are non-smoker (ns) i =…

A: Given, 25% are smokers(s) and 75% are non-smokers(ns) i=0.02 It is a mixed distribution and the…

Q: For a normally distributed population with μ = 82 and o =40, find P(x ≥185). O a. 0.0049 O b. 2.58 O…

A: The mean is 82 and the standard deviation is 40.

Q: Consider the value of r such that 0.05 of the area under the curve is to the left of t.. Step 2 of…

A: Given the value of t such that 0.05 of the area under the curve is to the left of t.That is, level…