weight of 450kg with a variance of 70. A sample of 149 female lions had an average weight of 250kg with a variance of 40. A  sample of 42 male tiger found an average wight of 550kg with a variance of 55. A sample of 72 female tigers found an average wight of 450kg with a variance of 48. Test the hypothesis that there is no difference between the difference between male and female lions and male and female tigers and what is the p-value?

Q: ht bulb manufacturer wants to compare the mean lifetimes of two of its light bulbs, model A and…

A: Given that    Sample sizes n1=11     , n2=13        Sample means X̄1=1323     , X̄2=1366     s1 =95…

Q: company is checking the variance in units produced by two of its plants. Management believes the var…

A: Plant 1 Plant 2   163000 150000   147000 145000   3337000 230000   234000 215000   245000…

Q: Two soap brands have a competition over the longevity of their bars. A sample of 16 bars from…

A: Given Information:  Sample 1 mean (x1) = 13.1  Sample 2 mean (x2) = 10.3  Sample  1 variance (s12) =…

Q: The fan blades on commercial jet engines must be replaced when wear on these parts indicates too…

A: Given that  Sample size (n)=61  Sample variance (s2)=0.29 Level of significance =0.01 Population…

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A:

Q: A recruitment specialist wishes to examine whether there is any difference between the variation in…

A: Accounts are taken as group 1. Marketers are taken as group 2. Given:…

Q: A bakery is considering buying one of two gas ovens. The bakery requires that the temperature remain…

A: Hypothesis Testing: It is basically a comparison of the statistical measures of the data with one…

Q: The null hypothesis: H0:   The alternative hypothesis: H1:   The type of test statistic: (Choose…

A:

Q: The fan blades on commercial jet engines must be replaced when wear on these parts indicates too…

A:

Q: A study involving 20 college students aimed to investigate the impact of a novel study technique on…

A: The sampled number of students, n=20.In this case, as each of the students' exam scores is measured…

Q: An examination in communications has been taken by communications majors and also by some students…

A: Solution : Given information: n1= 25  Sample size of communications majors n2= 28  Sample size of…

Q: According to the National Health Interview Survey, 2007,  Avg height for men = 69.93 inches Avg…

A: Given that According to the National Health Interview Survey, 2007,  Avg height for men = 69.93…

Q: A light bulb manufacturer wants to compare the mean lifetimes of two of its light bulbs, model A and…

A:

Q: shiela is a big fan of foxes and has studied the weight of young foxes of a certain type at birth.…

A: Given:n1=15, x1=1.23, s12=0.3n1=15, x2=1.13, s22=0.4   1)To test:H0:μ1-μ2=0H1:μ1-μ2≠0

Q: The fan blades on commercial jet engines must be replaced when wear on these parts indicates too…

A: a) The level of significance, α=0.01. As the null hypothesis, assume that the variance of…

Q: To improve driver safety, Federal government is always encouraging states to lower the variance of…

A: Given: n = 16            S1 = 32  & S2 = 16     To test whether the variance of stopping…

Q: A certain soft drink advertises that their drink contains 14g of carbohydrates with a variance of…

A: Given: x¯=sample mean=13.82n=sample size=60μ=population mean=14σ2=population variance=2.56σ=2.56…

Q: A random sample of 23 bags of apples (marked as 10 pounds each) received by a large grocery chain…

A: Solution: State the hypotheses. Null hypothesis: That is, the true mean of all bags is not less…

Q: What is the critical value at a .01 significance level? (Notes: enter only the positive value if…

A: The degrees of freedom is, df=n1+n2-2=27+30-2=55 The degrees of freedom is 55. The significance…

Q: A light bulb manufacturer wants to compare the mean lifetimes of two of its light bulbs, model A and…

A: The following information has been provided: n1=12                        n2=14x¯1=1372…

Q: A lumber company is making doors that are 2058.0 millimeters tall. If the doors are too long they…

A: Population mean, μ = 2058.0 millimeters Sample mean,  = 2044.0 millimeters Sample size, n = 20…

Q: A call center is contracted to handle customer service for a major bank. One manager, Tanisha, bets…

A: Hypothesis test :Hypothesis testing can be defined as a statistical tool that is used to identify if…

Q: The average travel time going from Bulacan to Laguna is at most 3.5 hours. A bus company conducts a…

A: Solution

Q: A new fuel injection system has been engineered for pickup trucks. The new system and the old system…

A:

Q: A group of researchers study the effectiveness of hypnotherapy on duration daily of sleeping hours.…

A:

Q: A teacher is interested in assessing whether or not there is the same amount of variance in the…

A: Given, A sample of 15 boys had variance 460 A sample of 13 girls had variance 1400

Q: An examination in biology has been taken by biology majors and also by some students from other…

A: Given:

Q: A company produces orange juice bottles with a volume of approximately 2 liters each. One machine…

A:

Q: A new sleeping pill is advertised to increase the daily sleeping time of insomniacs by an average of…

A: From the provided information, Sample size (n) = 17 Sample variance (s2) = 0.51 Level of…

Q: Two groups of mice were injected with a measured amount of tumor pulp. The first group of 27 mice…

A: It is a Left tailed test.

Q: A school administrator wants to see if there is a difference in the number of students per class for…

A: The confidence interval measures the range where the true parameter occurs. It has two parts, they…

Q: A therapist would like to evaluate an intervention for treating depression.  A sample of n = 20…

A: From the provided information, Sample size (n) = 20 Level of significance (α) = 0.05 Mean difference…

Q: 5) A machine makes drill bits. When the machine is operating correctly, the variance of the diameter…

A:

Q: A professor in the ISE department claims that there is much more variability in the final exam…

A: The given information is:Number of non-IE major students (Group1) Number of IE major students (Group…

Q: 1. A researcher is interested in whether North Americans are able to identify emotions correctly in…

A: Given information: The accuracy rating of adult North Americans follows X~Nμ=82,σ2=20. The sample…

Q: Construct 99% confidence interval estimate of the difference in the mean computer anxiety…

A: Given :  The researchers found the following: X_bar(male)=40.26, variance_male=169 , Standard…

Q: An article about “Relative Controllability of Dissimilar Cars” reported a study in which 14 subjects…

A: sample mean, x = 1.21 sample variance = 160.7824 sample standard deviation, s = 160.7824 = 12.68…

Q: An examination in biology has been taken by biology majors and also by some students from other…

A:

Q: A researcher claims that the variation in the salaries of elementary school teachers is greater than…

A: The variance in elementary school teachers’ salaries is σ12 and the variance in secondary school…

Q: The impact strength of these gears measured in foot-pounds is an important characteristic. A random…

A: Claim : The mean impact strength of gears from supplier 2 is at least 25 foot-pounds higher than…