Question

Using traditional methods, it takes 9.4 hours to receive a basic driving license. A new license...

Using traditional methods, it takes 9.4 hours to receive a basic driving license. A new license training method using Computer Aided Instruction (CAI) has been proposed. A researcher used the technique with 23 students and observed that they had a mean of 9.0 hours with a standard deviation of 1.4. A level of significance of 0.1 will be used to determine if the technique performs differently than the traditional method. Assume the population distribution is approximately normal. Is there sufficient evidence to support the claim that the technique performs differently than the traditional method?

O There is NOT sufficient evidence to support the claim that the technique performs differently than the traditional method?

O There IS sufficient evidence to support the claim that the technique performs differently than the traditional method?

Please show all steps required to answer this question.

Homework Answers

Answer #1

Given that, sample size (n) = 23

sample mean = 9.0 hours and

sample standard deviation (s) = 1.4 hours

The null and alternative hypotheses are,

H0 : μ = 9.4 hours

Ha : μ ≠ 9.4 hours

Test statistic is,

=> Test statistic = t = -1.370

t-critical values at significance level of 0.10 with degrees of freedom = 23 - 1 = 22 are, t* = ±1.717

Excel Command : =TINV(0.10, 22) = 1.717

=> Critical values = ± 1.717

Since, test statistic = -1.370 > -1.717, we fail to reject the null hypothesis.

Therefore, there is not sufficient evidence to support the claim that the technique performs differently than the traditional method.

​​​​​

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Using traditional methods, it takes 97 hours to receive a basic driving license. A new license...
Using traditional methods, it takes 97 hours to receive a basic driving license. A new license training method using Computer Aided Instruction (CAI) has been proposed. A researcher used the technique with 90 students and observed that they had a mean of 99 hours. Assume the standard deviation is known to be 7. A level of significance of 0.02 will be used to determine if the technique performs differently than the traditional method. Is there sufficient evidence to support the...
Using traditional methods, it takes 9.4 hours to receive a basic driving license. A new license...
Using traditional methods, it takes 9.4 hours to receive a basic driving license. A new license training method using Computer Aided Instruction (CAI) has been proposed. A researcher used the technique with 24 students and observed that they had a mean of 9.6 hours with a standard deviation of 1.4. A level of significance of 0.1 will be used to determine if the technique performs differently than the traditional method. Assume the population distribution is approximately normal. Find the value...
Using traditional methods, it takes 103 hours to receive a basic flying license. A new license...
Using traditional methods, it takes 103 hours to receive a basic flying license. A new license training method using Computer Aided Instruction (CAI) has been proposed. A researcher used the technique with 120 students and observed that they had a mean of 104 hours. Assume the variance is known to be 25. A level of significance of 0.05 will be used to determine if the technique performs differently than the traditional method. Is there sufficient evidence to support the claim...
Using traditional methods, it takes 94 hours to receive a basic flying license. A new license...
Using traditional methods, it takes 94 hours to receive a basic flying license. A new license training method using Computer Aided Instruction (CAI) has been proposed. A researcher used the technique with 80 students and observed that they had a mean of 92 hours. Assume the standard deviation is known to be 6. A level of significance of 0.05 will be used to determine if the technique performs differently than the traditional method. Is there sufficient evidence to support the...
Using traditional methods it takes 9.0 hours to receive a basic driving license. A new license...
Using traditional methods it takes 9.0 hours to receive a basic driving license. A new license training method using Computer Aided Instruction (CAI) has been proposed. A researcher used the technique on 21 students and observed that they had a mean of 8.6 hours with a standard deviation of 1.1. Is there evidence at the 0.05 level that the technique performs differently than the traditional method? Assume the population distribution is approximately normal. Step 2 of 3: Find the P-value...
Using traditional methods it takes 94.094.0 hours to receive a basic flying license. A new license...
Using traditional methods it takes 94.094.0 hours to receive a basic flying license. A new license training method using Computer Aided Instruction (CAI) has been proposed. A researcher used the technique on 7070 students and observed that they had a mean of 92.092.0 hours. Assume the standard deviation is known to be 6.06.0. Is there evidence at the 0.050.05 level that the technique performs differently than the traditional method? Step 1 of 5: Enter the hypotheses: Using traditional methods it...
Using traditional methods, it takes 8.78.7 hours to receive a basic driving license. A new license...
Using traditional methods, it takes 8.78.7 hours to receive a basic driving license. A new license training method using Computer Aided Instruction (CAI) has been proposed. A researcher used the technique with 2727 students and observed that they had a mean of 8.58.5 hours with a variance of 2.562.56. A level of significance of 0.10.1 will be used to determine if the technique performs differently than the traditional method. Assume the population distribution is approximately normal. State the null and...
Using traditional methods, it takes 9.6 hours to receive a basic driving license. A new license...
Using traditional methods, it takes 9.6 hours to receive a basic driving license. A new license training method using Computer Aided Instruction (CAI) has been proposed. A researcher used the technique with 16 students and observed that they had a mean of 9.5 hours with a standard deviation of 1.6. A level of significance of 0.1. will be used to determine if the technique performs differently than the traditional method. Assume the population distribution is approximately normal. State the null...
Using traditional methods, it takes 11.5 hours to receive a basic driving license. A new license...
Using traditional methods, it takes 11.5 hours to receive a basic driving license. A new license training method using Computer Aided Instruction (CAI) has been proposed. A researcher used the technique with 17 students and observed that they had a mean of 11.9 hours with a standard deviation of 1.7. A level of significance of 0.05 will be used to determine if the technique performs differently than the traditional method. Assume the population distribution is approximately normal. State the null...
Using traditional methods, it takes 9.5 hours to receive a basic driving license. A new license...
Using traditional methods, it takes 9.5 hours to receive a basic driving license. A new license training method using Computer Aided Instruction (CAI) has been proposed. A researcher used the technique with 13 students and observed that they had a mean of 9.3 hours with a variance of 3.61. A level of significance of 0.05 will be used to determine if the technique performs differently than the traditional method. Assume the population distribution is approximately normal. Make the decision to...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT