Question

A random sample of 208 WCC students found that 94 of them were Latino/a. (a) At...

A random sample of 208 WCC students found that 94 of them were Latino/a.
(a) At the 5% level of significance can we prove that over 40% of all WCC students are Latino/a? State and test appropriate hypotheses. State conclusions.
(b) Find the p-value of the test in (a).
(c) If an error was made in (a), what type was it?

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
. A random sample of 17 American marriages found that their mean length was 9.4 years...
. A random sample of 17 American marriages found that their mean length was 9.4 years with a standard deviation of 8.1 years. (a) At the 5% level of significance can we conclude that the mean length of all American marriages is less than 10 years? State and test appropriate hypotheses. State conclusions. (b) What assumption is needed for the above analysis to be appropriate?
Consider the following hypotheses: H0: μ ≥ 208 HA: μ < 208 A sample of 80...
Consider the following hypotheses: H0: μ ≥ 208 HA: μ < 208 A sample of 80 observations results in a sample mean of 200. The population standard deviation is known to be 30. (You may find it useful to reference the appropriate table: z table or t table) a-1. Calculate the value of the test statistic. (Negative value should be indicated by a minus sign. Round intermediate calculations to at least 4 decimal places and final answer to 2 decimal...
A random sample of 53 engineering students at KAU is selected, 30 of them are found...
A random sample of 53 engineering students at KAU is selected, 30 of them are found to support exit exam. Based on this sample, at 96% confidence level, What is the maximum error of the estimation of the proportion for engineering students favoring the exit exam?
A random sample of 247 domestic flights provided by Raven Airways found that 91% of them...
A random sample of 247 domestic flights provided by Raven Airways found that 91% of them arrived on time. A random sample of 235 domestic flights provided by Osprey Airlines found that 85% of them arrived on time. Perform a significance test at α = 0.05 to determine if a significantly higher proportion domestic flights arrive on time for Raven Airways than for Osprey Airlines. State your hypotheses, find the test statistic and p-value, and state your conclusion. a) What...
A random sample of 149 recent donations at a certain blood bank reveals that 84 were...
A random sample of 149 recent donations at a certain blood bank reveals that 84 were type A blood. Does this suggest that the actual percentage of type A donations differs from 40%, the percentage of the population having type A blood? Carry out a test of the appropriate hypotheses using a significance level of 0.01. State the appropriate null and alternative hypotheses. H0: p = 0.40 Ha: p < 0.40H0: p = 0.40 Ha: p ≠ 0.40    H0: p ≠...
A random sample of 169 recent donations at a certain blood bank reveals that 88 were...
A random sample of 169 recent donations at a certain blood bank reveals that 88 were type A blood. Does this suggest that the actual percentage of type A donations differs from 40%, the percentage of the population having type A blood? Carry out a test of the appropriate hypotheses. a) What is the standard error for the sample proportion? b) Computer the p-value of this test
A simple random sample of 100 flights Airline 1 showed that 64 were on time. A...
A simple random sample of 100 flights Airline 1 showed that 64 were on time. A simple random sample of 100 flights of Airline 2 showed that 80 were on time. Let p1 and p2 be the proportions of all flights that are were time for these two airlines. Is there evidence of a difference in the on-time rate for the two airlines? To determine this, test the hypotheses H0: p1 = p2 versus Ha: p1 ≠ p2 at a...
A simple random sample is conducted of 2000 college students, 1289 of them have student loans....
A simple random sample is conducted of 2000 college students, 1289 of them have student loans. Use 1% significance level to test the claim that most college students have student loans (over 50%). =
In a simple random sample of 500 freshman students, 276 of them live on campus. You...
In a simple random sample of 500 freshman students, 276 of them live on campus. You want to claim that majority of college freshman students in US live on campus. A) Are the assumptions for making a 95% confidence interval for the true proportion of all college freshman students in the United States who live on campus satisfied? yes/no? B) What is the sample proportion? C.) A 95% confidence interval for the actual proportion of college freshman students in the...
A sample of 18 California wine specimens found a mean lead content of 287 parts per...
A sample of 18 California wine specimens found a mean lead content of 287 parts per billion (ppb) with a standard deviation of 120 ppb. At the 1% level of significance can we show that the mean lead content of all California wines is not 240 ppb? (a) State and test appropriate hypotheses. State conclusions (b) What assumption is necessary for the analysis above to be appropriate?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT