Activity 2.1: Be Critical!Directions: Determine the critical value and illustrate the rejectionregion under the normal curve by using the given information.Critical Value:Critical Value:↑Critical Value:Critical Value:prepadMCritical Value:1. Ha: p < 0.65α = 0.012. Ha: p > 0.50α = 0.053. Ha: p = 0.70α = 0.054. Ha: p < 0.55a = 0.105. Ha: p = 0.43a = 0.01Jadi abul

According to guideline we solve only first question when given questions are different.

Answered: tical! ne the critical value and…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A sample of birth weights of 48 girls was taken. Below are the results (in g): 2724.5 3340.1 3243.6 3442.1 2996.9 3042 3505 3161.8 4022.8 3362.9 3768.9 2951.9 3229.7 2997.5 3758.1 3350.2 3210.7 3684.3 3530.1 3132.7 2776.9 3492.7 2655.1 3790.9 3064.6 3744.6 3294.5 2654.7 3536.6 2781.1 3756.3 3531.5 3654.2 3505.1 4018.6 3038 3202.3 3006 3701.6 3451.4 2986.5 3541.2 3232.9 2966 3186 3550.3 3056.6 3467.1 * = 3314.6 g s = 347.35 g Use a 5% significance level to test the claim that the standard deviation of birth weights of girls is less than the standard deviation of birth weights of boys, which is 530 g. Round all answers to 3 decimal places if possible.
Find the z-score that defines α=0 .05 and α=.01 critical regions for a one-tail test? 8. Find the z-score that defines α=0 .05 and α=.01 critical regions for a two-tail test?
if alpha is 1%, find the critical value (z-score)
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Use a smoothing constant ALPHA = 0.8 and calculate the forecasted value and smoothing value
Using the z table, find the critical region (or regions) for each. a. α = 0.015, two-tailed test b. α = 0.025, left-tailed test
Strength of concrete: The compressive strength, in kilopascals, was measured for concrete blocks from five different batches of concrete, both three and six days after pouring. The data are as follows. Can you conclude that the mean strength after three days is greater than the mean strength after six days? Let μ₁ represent the mean strength after three days and μμ₁ −μ₂. Use the a= 0.05 level and the critical value method with the table. Block 1 2 3 4 5 After 3 days 1386 1382 1349 1384 1341 After 6 days 1344 1343 1307 1325 1301 Send data to Excel Part 1 of 5 (a) State the null and alternate hypotheses. Ho|ua = 0 H₁ H₂ > 0 This hypothesis test is a right-tailed ▼test. Part: 1 / 5 Part 2 of 5 Find the critical value. Round the answer to three decimal places. If there is more than one critical value, separate them with commas. The critical value(s): 0.0.... X
Strength of concrete: The compressive strength, in kilopascals, was measured for concrete blocks from five different batches of concrete, both three and six days after pouring. The data are as follows. Can you conclude that the mean strength after three days is greater than the mean strength after six days? Let μ₁ represent the mean strength after three days and μμ₁ −μ₂. Use the a= 0.05 level and the critical value method with the table. Block 1 2 3 4 5 After 3 days 1341 1386 1382 1349 1384 1344 1343 1307 After 6 days 1325 1301 Send data to Excel Part 1 of 5 (a) State the null and alternate hypotheses. Ho: Ha = 0 H₁: Pa This hypothesis test is a right-tailed test. Part 2 of 5 Find the critical value. Round the answer to three decimal places. If there is more than one critical value, separate them with commas. The critical value(s): 2.132 Part: 2 / 5 Part 3 of 5 (b) Compute the test statistic. Round the answer to at least three decimal places. t= X
EITHER state the critical values and use the critical values/z-obtained comparison OR use the p-value/alpha comparison to make a decision Are there differences between whites’ and blacks’ perceived neighborhood safety (FEAR, RACE)? Use α=0.01.
Ms. Arceo studies if age correlates with the average number of hours of sleep, so she selected a random sample of size 10 and surveyed the needed data. age(x) hours of sleep (y) STEP 2: a = 0.05 two tailed test df = [e] Critical value/s: [f] 8 STEP 4: Decision: [h] 8 EP 3: What is the computed test value? [g] STEP 5: Conclusion: 15 8 choose your answer... choose your answer... 22 7 STEP 1: Ho: There is [c] between age and number of hours of sleep. Ha: There is [d] between age and number of hours of sleep. 27 7 34 20 25 There is [i] between age and number of hours of sleep. [a] choose your answer... Test the significance of the correlation coefficient at 0.05 level of significance. Correlation coefficient r: [a] For the sample data, there is a [b] correlation between age and number of hours of sleep. 5 6 ✓ [b] choose your answer... [f] choose your answer... 6 41 15 8 7 36 5 Testing of Significance of r ✓ [c] choose your answer... ✓ [g] choose your answer... ✓ [d] choose your answer...…
If the researcher decides to test this hypothesis at the α=0.1 level of significance, determine the critical value(s). Although technology or a t-distribution table can be used to find the critical value, in this problem use the t-distribution table given. Critical Value:
Use ANOVA to test the hypothesis Ho: β = 0 versus H1: β = 0. What will be the value of f? write your solution clealy. thanks

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tical! ne the critical value and illustrate the rejection mal curve by using the given information. ↑ ^ A 2 1 m