1. Students in Math-145 were asked whether or not they had pierced ears. The results were shown in the table below: Yes (Y) No (N) Total Male (M) 18 72 90 Female (F) 84 4 88 Total 102 76 178 a. Describe F n N' in words. b. Use the table to compute n(F n N'). c. What percentage of males have pierced ears?
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: 2. A thermometer is taken from an inside room to the outside ,where the air temperature is 5° F.…
A:
Q: Fifty people are selected randomly from a certain population and it is found that 12 people in the…
A: We have to find correct point estimate for proportion.
Q: For years, many people thought that the mean body temperature of healthy adults was 98.6 degrees. A…
A: State the hypotheses. That is, the mean body temperature of healthy adults equals 98.6 degrees.…
Q: is n if we take m goods and classify it as damaged or good. What is the value of m if we are to be…
A: Solution
Q: 4. Find the average value of the given function on [1,4]. g(x) = 4 – x? -
A:
Q: The department of health studied the number of patients who need liver transplantation. The…
A: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for…
Q: The following table gives the total endothermic reactions involving sodium bicarbonate Final…
A:
Q: Find out the number of students securing second division in the University examinations from the…
A:
Q: b) Given the following data in table below: f(x) 9.367879 8.233241 7.180350 6.209329 -3.0 -2.8 -2.6…
A:
Q: 4. For a population with u= 100 and o = 20, what is the X value corresponding to z=- 0.75?
A: GivenMean(μ)=100standard deviation(σ)=20z=-0.75
Q: Suppose X~N(193,6) and Z~N(0,1). If z = -1.12, what is it on an X scale? Express your answer to two…
A: Given, X ~ N(193,6) Z ~ N (0,1) μ = 193 σ = 6 To find, If Z = -1.12, what is it on an X…
Q: What percentage of scores is between a z of ‐2 and a z of +2? Why is this important?
A: Use Empirical rule to solve it
Q: Below is the table for the incidence of lung cancer following exposure to asbestos dust. We will…
A:
Q: a. If a man is 6 feet 3 inches tall, what is his z-score (to 4 decimal places)? Z = b. If a woman is…
A: formula for z-score is
Q: The following table shows the age range of different types of students doing three different…
A: As per our guidelines we are suppose to answer only three subparts
Q: e, x uency, f mean is 1 2 3 4 5 6 2 2 3 6 4 7 (Round to 3 decimal places as needed.) 7 9 8 3 9 - 10…
A: Given Find the mean for the data items in the given frequency distribution.
Q: A clinical psychologist is investigating the relationship between sleep and feelings of anxiety. For…
A: Given:Mx=6, SSx=16My=8, SSy=64 and SP=-20 Let x denotes the Hours of sleep and y denotes the Anxiety…
Q: S For n= 15, the margin of error for an estimate at an alpha level of 2% is +2.249 15
A:
Q: Suppose John has a torn tendon and is facing surgery to repair it. The surgeon explains the risks to…
A: Let us denote: A= infection B= Repair fail Given that P(A)=3%=0.03 , P(B)= 17%=0.17 P(A and…
Q: 29%, CBS 28%, NBC 25%, and independents 18%. A sample of 300 homes two weeks after a Saturday night…
A: Given See the handwritten solution
Q: (c) Suppose you compute that dE is positive for all b. What would that mean in terms of efficiency…
A: If dE/db is positive for all b.
Q: Suppose that in a memory experiment the rate of memorizing is given by M'(t) = – 0.003ť² + 0.3t,…
A: GivenRate of memorizing M'(t)=-0.003t2+0.3twhere M'(t) is memory rateTo find:In the first 9…
Q: People having Raynauds syndrome are apt to suffer a sudden impairment of blood circulation in…
A: Given : m =12 , n = 12 Test the hypothesis at α = 0.01 , H0: µ1 − µ2 = 0 versus Ha: µ1 −…
Q: This is a homework question: Does the obtained value exceed the critical value, 1.96? I answered…
A: From the given information, it can be observed that the sample mean is 2.25.
Q: 40. A population with a mean of u=9 has EX = 72. How many scores are in the population? (SHOW
A:
Q: What proportion of Z-scores are outside the interval Z = −2.2 and Z = 2.2? Round to 4 decimal…
A: Given that, z=-2.2 and z=2.2 we have to find out proportion of Z-scores are outside the interval Z =…
Q: The following table gives the total endothermic reactions involving sodium bicarbonate Final…
A: Hi! Thank you for posting the question. However, from the given data, the problem was not completely…
Q: Is a value of r=0.75 from a sample of 100 more significant than a value of r=0.30 from a sample of…
A:
Q: The death rate from a particular form of cancer is 20% during the treated with an experimental drug,…
A: 29. The null and alternative hypotheses are: Ho: p = 0.20Ho:p=0.20 Ha: p &lt; 0.20Ha:p<0.20…
Q: To investigate water quality, the Columbus Dispatch took water specimens at 16 Ohio State Park…
A: The mean E.coli level is obtained as given below:…
Q: A sample of patients is tested to determine if they have any hospital borne infections. How large of…
A:
Q: A study was carried out to investigate the relationship between the hardness of molded plastic (y,…
A:
Q: The mean ±1 sd of ln [calcium intake (mg)] among 25 females, 12 to 14 years of age, below the…
A:
Q: what is the obtained value? numerical only rounded to 2 decimal places heres th evalues M1=8.81…
A: Sample sizes n1=20 , n2=30 Sample means X̄1=8.81 , X̄2=8.79 s12 =67.62 ,…
Q: Suppose X~N(179,8) and Z~N(0,1). If z = -1.58, what is it on an X scale? Express your answer to two…
A: Given: X ~ N(179, 8) and Z ~ N(0, 1)z=-1.58
Q: Persons having Raynaud's syndrome are apt to suffer a sudden impairment of blood circulation in…
A:
Q: e 6. From the following data, estimate the number of persons earning wages between 60 and 70 rupees.…
A:
Q: For a population with μ =100 and σ = 20, what is the X value corresponding to z = -0.50?
A:
Q: Pepsi Co. Pvt Ltd is planning to produce a new energy drink. For this purpose, a pilot study was…
A: The null and alternate hypothesis is (As the question give us freedom to use technology so we shall…
Q: Listed below are body temperatures from five different subjects measured at 8 AM and again at 12 AM.…
A: From the provided information, The difference table can be obtained as: Temperature(F) at 8 AM…
Q: For years, many people thought that the mean body temperature of healthy adults was 98.6 degrees. A…
A: Solution: It is given that, for years, many people thought that the mean body temperature of healthy…
Q: The data in the accompanying table are from a paper. Suppose that each person in a random sample of…
A:
Q: If a sample of n=5 scores has EX= 10 and EX² = 100, then SS= 80. %3D True False Question 41 In a…
A: (a) Given : Sample size = n = 5 , ∑X=10 & ∑X2=100 Formula for Sum of Squares :…
Q: What is the value of the F-statistic for Ho 01s 12, HA 2 012>01, where s 1= 3.3, and s 2 = 2.1. O…
A: An F statistic is a value you get when you run an ANOVA test or a regression analysis to find out if…
Q: 13) In a clinical study of an allergy drug, 115 of the 260 subjects reported experiencing…
A: Given n=260 X=115 p=X/n=115/260=0.442 90% confidence interval
Q: Suppose the manufacturer of a new drug wants to test H,: 0 = 0.8 versus H,: 0 = 0.6 ere 0 is true…
A: Note: Hi there! Thank you for posting the question. As you have posted multiple questions, as per…
Q: 36. From the following data, estimate the number of persons earning between Rs. 360 and Rs. 370 per…
A:
Step by step
Solved in 3 steps with 1 images
- The effective reproductive number (Re) can be defined as the average number of new infections caused by a single infected individual in a partially susceptible population: Re = R0·S. If a highly virulent disease has a R0 of 3, but 54 % of the population becomes immune to it, what is the effective reproductive number (Re) for this disease? Use 1 decimal place only, without units! Wrong entries won't be corrected.3.Suppose that you are interested in finding proportion of males that order cold brew at Starbucks. Starbucks states that 40% of males order cold brew on the regular. From a sample of 375 males at a local Starbucks, you observe that 165 ordered cold brew. You are then interested to find whether the proportion of males that order cold brew has changed c) Find the p-value. Round to four decimal placesA new insecticide is advertised to kill more than 95% roaches upon contact. In a laboratory test, the insecticide was applied to 400 roaches and 384 died immediately after contact. Is this sufficient evidence to support the advertised claim? Use α=0.05. (c) p-value for the problem above i
- 1. A researcher reports an F-ratio with df(between) = 3 and df(within) = 28. How many treatment conditions were compared in the experiment? If samples have an equal number of participants, how many are in each treatment? 2. A researcher obtains an F = 4.10 with df = 2, 14. Is this value sufficient to reject the null with α = .05? Is it sufficient enough to reject the null with α = .01?You are conducting a study to see if the proportion of women over 40 who regularly have mammograms is significantly less than 75%. With H1 : p < 75% you obtain a test statistic of z=−2.909. Find the p-value accurate to 4 decimal places.People having Raynauds syndrome are apt to suffer a sudden impairment of blood circulation in fingers and toes. In an experiment to study the extent of this impairment, each subject immersed a forefinger in water and the resulting heat output (cal/cm2/min) was measured. For m = 12 subjects with the syndrome, the average heat output was x = 0.64, and for n = 12 non-sufferers, the average output was 2.05. Let µ1 and µ2 denote the true average heat outputs for the two types of subjects. Assume that the two distributions of heat output are normal with σ1 = 0.2 and σ2 = 0.2. 1) Consider testing H0: µ1 − µ2 = 0 versus Ha: µ1 − µ2 < 0 at level 0.01. Describe in words what Ha says, and then carry out the test. 2) What is the probability of a type II error when the actual difference between µ1 and µ2 is µ1 − µ2 = −1.2? 3) Assuming that m=n, what sample sizes are required to ensure that β=0.1when µ1− µ2 = −1.2?
- 1. Is a value of r=0.75 from a sample of 100 more significant than a value of r=0.30 from a sample of 1000?The analysis of tooth shrinkage by C. Loring Brace and colleagues at the University of Michigan’s Museum of Anthropology indicates that human tooth size is con-tinuing to decrease and that the evolutionary process has not yet come to a halt. In northern Europeans, for example, tooth size reduction now has a rate of 1% per 1000 years. a. If t represents time in years and y represents tooth size, use the condition that y = 0.99y0 when t = 1000 to find the value of k in the equation y = y0 ekt. Then use this value of k to answer the following questions. b. In about how many years will human teeth be 90% of their present size? c. What will be our descendants’ tooth size 20,000 years from now (as a percentage of our present tooth size)?A tax accountant would like to test the claim that the proportion of individuals who owe when filing their taxes is greater than 0.20. If the z− test statistic was calculated as z=1.94, does the tax accountant have enough evidence to reject the null hypothesis? Assume α=0.05.
- 15. As x increases uniformly at the rate of 0.002 feet per second, at what rate is the expression (1 + x) to the 3rd power increasing when x becomes 8 feet?You are conducting a study to see if the proportion of women over 40 who regularly have mammograms is significantly more than 82%. With H1 : p >> 82% you obtain a test statistic of z=1.203z=1.203. Find the p-value accurate to 4 decimal places.Suppose that in a memory experiment the rate of memorizing is given by M′(t)=−0.009t2+0.4t, where M′(t) is the memory rate, in words per minute. How many words are memorized during minutes 15−20?