Find the critical value for testing H0: ?H0: ? = 14.93 versus Ha: ?Ha: ? > 14.93 at significance level 0.005 for a sample of size 25. Round your final answer to three decimal places.
Find the critical value for testing H0: ?H0: ? = 14.93 versus Ha: ?Ha: ? >...
Find the positive critical value for testing Ho: u = 17.55 versus Ha: # 17.55 at significance level 0.05 for a sample of size 30. Round your final answer to three decimal places.
In testing H0: µ = 100 versus Ha: µ ╪ 100 versus using a sample size of 325, the value of the test statistic was found to be 2.16. The p-value (observed level of significance) is best approximated by 0.0154 0.9692 0.4846 0.0308 0.007
Consider testing H0: p=0.1 versus H1: p<0.1. If the standardized critical value is -1.00 (i.e. the standardized rejection region is from negative infinity to -1.00) then what was the selected significance level (alpha)? (Answer as a probability, not a percent. Record your answer accurate to at least the nearest THIRD decimal place with standard rounding.)
The one-sample t statistic for testing H0: μ = 40 Ha: μ ≠ 40 from a sample of n = 13 observations has the value t = 2.77. (a) What are the degrees of freedom for t? (b) Locate the two critical values t* from the Table D that bracket t. < t < (c) Between what two values does the P-value of the test fall? 0.005 < P < 0.01 0.01 < P < 0.02 0.02 < P <...
Consider the test of H0:σ2=10 against H1:σ2>10. What is the critical value for the test statistic X02 for the significance level α=0.005 and sample size n=20? Give your answer with two decimal places (e.g. 98.76).
Suppose that ơ is known, for testing H0: µ=µ0 versus alternative of Ha: µ>µ0 (Given µa>µ0), derive a formula to find the value of sample size n, for specified α and β.
Consider the following hypotheses: H0: μ = 420 HA: μ ≠ 420 The population is normally distributed with a population standard deviation of 72. Use Table 1. a. Use a 1% level of significance to determine the critical value(s) of the test. (Round your answer to 2 decimal places.) Critical value(s) ± b-1. Calculate the value of the test statistic with x−x− = 430 and n = 90. (Round your intermediate calculations to 4 decimal places and final answer to...
What critical value t∗ from Table D should be used to construct a 95% confidence interval for μ (the population mean) when n = 15 (if applicable, please round your answer to at least 3 decimal places)? You are given only the following information for a hypothesis test of H0: μ=10versusHa: μ̸=10: x ̄ = 12.2 P-value = 0.08 Suppose, based on prior knowledge, the alternative Ha: μ < 10 was actually more appropriate. What is the P-value for the...
Consider the following competing hypotheses: H0: ρxy ≥ 0 HA: ρxy < 0 The sample consists of 30 observations and the sample correlation coefficient is –0.46. Use Table 2. a. 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 places.) Test statistic b. Approximate the p-value. 0.005 < p-value < 0.01 p-value < 0.005 0.01 < p-value <...
Consider the following competing hypotheses: H0: ρxy ≥ 0 HA: ρxy < 0 The sample consists of 34 observations and the sample correlation coefficient is –0.39. Use Table 2. a. 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 places.) Test statistic b. Approximate the p-value. 0.01 < p-value < 0.025 p-value < 0.005 0.05 < p-value <...