Radon-222 has a half-life of 4.00 days. Given its mass 3.168 gram at a certain time, what was the sample's mass (in gram) before 0.7 month? 1 month is about 30.5 days.

Q: 46. A population of N = 20 scores has EX = 50 and EX 2=4200. For this population, what is the value…

A: using the given data Find SS = ?

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: The population proportion is 0.76, confidence level is 96%, and margin of error is 0.04.

Q: A researcher expects that the number of people (18 years and older) who report binge drinking in the…

A: The hypothesized value of population proportion is p=0.25 i.e., proportion of people binge drinking…

Q: 3 a) x;Yi i=1 3 2 b) Ex, Ey Σ i=2 i=1

A: Reviewing the information, Given data is x1=2 , x2= -3 , x3=1 y1=4 , y2=2 , y3=5

Q: Find the P - value if the t-stat= -1.8, N=26, df = N-1, alpha = 0.05; and Ho: Mu1= Mu2; Ha : Mu1>…

A: t-score: the test statistic follows the t-distribution with n-1 = 26-1= 25, degrees of freedom. and…

Q: if the real value of certain experiment is xreal=1.98 and we take 5 messurements whose values are…

A: Given values are, x1=2x2=2.01x3=1.99x4=1.97x5=2.02

Q: QUESTION 11 Researchers look at the difference of proportions between two groups. Group 1 included…

A: For the given data Calculate the difference of proportion =?

Q: A train is moving 35 m/s to the east. It speeds up to 42 m/s east over the course of 40 seconds.…

A: We will find the acceleration using equation of motion as shown below

Q: M1= 37 SS1=360 n1=11 M2= 43 SS2=576 n2=10 Assume two failed test and alpha= .05 What is the t value?

A: We have given that M1= 37, SS1= 360, n1=11, M2 = 43, SS2 = 576 n2=10

Q: 1/6 tbsp vanilla extract =___tsp 6 tsp chocolate chips =____tbsp

A:

Q: Assume that you have calculated an observed z-value for a single measured value to -1.62. What…

A: Given : an observed z-value for a single measured value to -1.62 z = -1.62

Q: m = 2, s=3.8, standard error = .240 what is the CI at 95%

A: Confidence interval provides a interval for a population parameter.

Q: For a population with +0.25. [Round to the nearest hundredths place if a decimal. If your calculated…

A: Given,Mean(μ)=30standard deviation(σ)=8and Z-score=0.25

Q: A certain bacteria is growing at 32.8% per day. a. Find the time it will take for a sample of the…

A:

Q: Determine the sample size required to achieve power = .93, assuming Ho = 12, o = 8, and H: H1 – Ho >…

A:

Q: NASA is conducting an experiment to find out the fraction of people who black out at G forces…

A: We have given information, Let x= number of people passed out at G forces greater than 6. A sample…

Q: If beta is equal to 0.4165, then the power of the test would

A: It is given that  Beta, β = 0.4165

Q: Test Engineers found that 22% of steel frames fracture within 15 years. The average stress that…

A: It is given that the average stress that the frames an withstand is 30 psi.

Q: You are conducting a study to see if the proportion of women over 40 who regularly have mammograms…

A: Denote p as the true proportion of women over 40 who regularly have mammograms.

Q: 9. 4, = 27r A %3D (note: a = a) ans : A ' =Tr 2/3

A: The given function is, The following formulae are used in differentiating the given function.

Q: 4. s=+- 5. y= X+1 2 x+ 1 6. f( x)=. 1- 2 x 2 7. y=2 x + 3 x'

A:

Q: How large a sample is needed (p= 0.70) if we wish to be 96% that our sample will be within 0.04 of…

A:

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: A- Of the 15 new Ml cases in the preceding study, 5 died within 24 hours. Test whether the 24-hour…

A:

Q: A sample of n 36 from a population of µ = 50 and o = 18 has a mean M = 47. What is the om for the…

A:

Q: For a normal population with μ = 25 and σ = 5, we would expect 95% of all x's calculated from n =9.…

A: Given, Population mean,  = 25That is, Sample mean,  = 25Population standard deviation, σ = 5Sample…

Q: 7. 0.5 L = mL 23. 150 µg = mg 8. 3.5 gm = mg 24. 16 fluid ounces = mL 9. 1.5 L = mL 25. 250 mL =

A: 71L=1000mL0.5L=0.5×1000mL0.5L=500mL81gm=1000mg3.5gm=3.5×1000mg3.5gm=3500mg91L=1000mL1.5L=1.5×1000mL1…

Q: - One method for determining the %w/w Na2CO3 in soda ash is an acid base titration. When analysts…

A: Given sample observations are 86.82, 87.04, 86.93, 86.20, 87.00, 87.01, 85.50, 87.32, 86.82. Let us…

Q: Compute the Fourier series for the given function ? on the specified interval.

A:

Q: if sigma=10.6 bpm bassed on the value s=10.6 bpm from the sample of 180 male pulse rates whats n=

A:

Q: You work for a large farm with many fields of corn. You are investigating the mass of a sample of…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: Staff members of an oil refinery believe that the octane reading of a particular petrol depends on…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: From a series of gas samples taken from the 1970 Mount Edna volcanic eruption, it has been…

A: We have to find out given probabiity...

Q: an of μ 16.187 and a population SD of a = 1.558. you were to randomly choose one male in the U.S.…

A: we have given  μ=16.187 and σ=1.558   a) To find the percentage of the population that begins…

Q: For a population, u = 165 and o = 64. For a sample selected from this population, µz = 165 and o, =…

A:

Q: T0 = 97 sec, W0 = 4.04 items, CTbot = 24 sec/item, and WIP = 5 items. What is the expected lead-time…

A: Solution is given below

Q: When a medical sample arrives at the laboratory, it is placed in a queue before being processed. The…

A: We will use graphs to find inter relation between p(t) and m(t) i.e. test conduct and test submitted…

Q: With Ha : p ≠≠ 89% you obtain a test statistic of z=3.015z=3.015. Find the p-value accurate to 4…

A: Denote p as the true proportion. The null and alternative hypotheses are: H0: p = 0.89, vs. Ha: p ≠…

Q: p (t>t1)=0.05 in a sample of n = 20 units, which of the following is t1? Please select one: a. 1.725…

A:

Q: Each person in random samples of 207 male and 263 female working adults living in a certain town in…

A: Given Information :  Each person in random samples of 207 male and 263 female working adults living…