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: One way to evaluate the effectiveness of a teaching assistant is to examine the scores achieved by…

A: Given Sample size, n=30 Sample variance, s2=480 Population variance, σ2=300

Q: Find a 99% confidence interval in the difference of the means. Use technology to find the critical…

A:

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: (a) What is the level of significance? State the null and alternate hypotheses. H0: ?2 = 0.18; H1:…

A: According to the answering guidelines, we can answer only 3 subparts of a question and the rest can…

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

A: Null Hypothesis:H0:σ2≤0.04 inches. Alternative Hypothesis: H1:σ2>0.04 inches.   Test statistic:…

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 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: In order to ensure that there is not a large disparity in the quality of education at various…

A:

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: Some transportation experts claim that it is the variability of speeds, rather than the level of…

A: Given that, some transportation experts claim that it is the variability of speeds, rather than the…

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: An educator has developed a program to improve math scores on the Texas STAAR test. The average…

A: The sample size n is 30.

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 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: In order to ensure that there is not a large disparity in the quality of education at various…

A: From the provided information, The sample size (n) = 27 Sample standard deviation (s) = 1.210

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 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: Suppose that hemoglobin levels in white males over age 11 are normally distributed with variance…

A: From the provided information,

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

A: The average weight for men is 192.78 lbs.

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: An educator has developed a program to improve math scores on the Texas STAAR test. The average…

A:

Q: in order to ensure that there is not a large disparity in the quality of education at various…

A: Step 1:   Consider that σ2 is the population variance of mean standardized-test scores for all…

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

A: Given:

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

A: The null and alternative hypotheses are: H0:σ2≤0.18 mm2 H1:σ2>0.18 mm2

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: Airline companies are interested in the consistency of the number of babies on each flight so that…

A:

Q: order to ensure that there is not a large disparity in the quality of education at various schools…

A: Given Alpha=0.05 n=27 Mean=189.720 Standard deviation=2.230

Q: Two coworkers commute from the same building. They are interested in whether or not there is any…

A: The test is to check whether the first worker thinks that he is more consistent with his commute…

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 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: A basketball coach believes that the variance of the heights of adult male basketball players is…

A: The sample variance and sample size of heights for basketball players are: & The sample variance…

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

A:

Q: An educator has developed a program to improve math scores on the Texas STAAR test. The average…

A: To test:H0:μ=1472H1:μ≠1472

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 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: In order to ensure that there is not a large disparity in the quality of education at various…

A: When the given sample is less than 30 then it is a small sample test. Chi-square test and t test are…