i am using minitab to solve the problem.
steps :-
stat basic statistics 1 variance select sample standard deviation from the drop down menutype 29 in sample size and 0.22 in sample standard deviation tick perform hypothesis test select hypotheized standard deviation from the drop down menu in value type 0.35optionsin confidence level type 95select the alternative hypothesis as standard deviation hypothesizedstandard deviationokok.
*** SOLUTION ***
hypothesis:-
the test statistic be:-
the p value of the test statistic is = 0.004
decision:-
Fail to reject H0. There is sufficient evidence to conclude that the tar content of filtered 100 mm cigarettes has a standard deviation different than 0.35 mg.
[ p value =0.004 < 0.05 (alpha) ]
*** if you have any doubt regarding the problem ,please write it in the comment box...if satisfied,please UPVOTE.
A simple random sample of 29 filtered 100-mm cigarettes is obtained from a normally distributed population,...
A simple random sample of 26 filtered 100-mm cigarettes is obtained from a normally distributed population, and the tar content of each cigarette is measured. The sample has a standard deviation of 0.16 mg. Use a 0.05 significance level to test the claim that the tar content of filtered 100-mm cigarettes has a standard deviation different from 0.20 mg, which is the standard deviation for unfiltered king-size cigarettes. Complete parts (a) through (d) below.
Assume that a simple random sample has been selected from a normally distributed population and test the given claim. Identify the null and alternative hypotheses test statistic, P-value, and state the final conclusion that addresses the original claim. A simple random sample of 25 filtered 100 mm cigarettes is obtained, and the tar content of each cigarette is measured. The sample has a mean of 18.6 mg and a standard deviation of 3.84 mg. Use a 0.05 significance level to...
Assume that a simple random sample has been selected from a normally distributed population and test the given claim. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. A simple random sample of 2525 filtered 100 mm cigarettes is obtained, and the tar content of each cigarette is measured. The sample has a mean of 19.419.4 mg and a standard deviation of 3.553.55 mg. Use a 0.050.05 significance level to...
Assume that a simple random sample has been selected from a normally distributed population and test the given claim. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. A simple random sample of 2525 filtered 100 mm cigarettes is obtained, and the tar content of each cigarette is measured. The sample has a mean of 19.219.2 mg and a standard deviation of 3.353.35 mg. Use a 0.050.05 significance level to...
please Find the test statistic, P value, and is this significant? Homework: HW 8.4 Testing a Claim About a Standard Deviation Save com HW Score: 49.56%, 5.95 of 12 pts Score: 0.2 of 1 pt % 8.4.12-T Question Help A simple random sample of 30 filtered 100-mm cigarettes is obtained from a normally distributed population, and the tar content of each cigarette is measured. The sample has a standard deviation of 0.20 mg. Use a 0.05 significance level to test...
This UUSUT Assume that a simple random sample has been selected from a normally distributed population and test the given claim. Identify the null and alterative hypotheses, and where claim. A simple random sample of 25 tored 100 mm cigaretes is obtained, and the tar content of each gratis measured. The sample has a mean of 100 mg and a standard deviation of Use the meantar content of fired 100 mm cigarettes is less than 21.1 mg, which is the...
A research conducted by the University of Michigan claimed that there are more female drivers in the USA than male drivers. A researcher decides to test this claim on his state. In his simple random sample of 900 observations, he noticed that 468 of 900 were women. At a = 0.05, is there enough evidence to support the claim? (Use the P-value method where Pz<1.20=0.8849 ) A sample of 100 body temperatures has a mean of 98.8℉ . Assume that...
Refer to data table below, which shows the amounts of nicotine (mg per cigarette) in king size, 100 mm menthol, and 100 mm nonmenthol cigarettes. The king size cigarettes are nonfiltered, while the 100 mm menthol and the 100 mm nonmenthol cigarettes are filtered. Use a 0.05 significance level to test the claim that the three categories of cigarettes yield the same mean amount of nicotine. Given that only the king size cigarettes are not filtered, do the filters appear...
A random sample of size n= 15 obtained from a population that is normally distributed results in a sample mean of 45.8 and sample standard deviation 12.2. An independent sample of size n = 20 obtained from a population that is normally distributed results in a sample mean of 51.9 and sample standard deviation 14.6. Does this constitute sufficient evidence to conclude that the population means differ at the a = 0.05 level of significance? Click here to view the...
A simple random sample of 59 adults is obtained from a normally distributed population, and each person's red blood cell count (in cells per microliter) is measured. The sample mean is 5.27 and T-Test the sample standard deviation is 0.52. Use a 0.01 significance level and the given calculator display to test the claim that the sample is from a population with a mean less than 54, which is a value μ 5.4 often used for the upper limit of...