The following questions are based on confidence intervals. iid Let, (4.00, 5.26, 4.84, 6.77, 5.23, 5.64, 3.84, 6.4,3 3.35, 4.28) a) and o? is unknown. Calculate a 90% confidence interval for µu. N (1, 0?) with рER b) interval for o². Using the same data set provided in (a), calculate the left sided 95% confidence

Construct a confidence interval for P1 - P2 at the given level of confidence. X1 = 26, n, = 236, x2 = 30, n2 = 304, 90% confidence %3D The researchers are% confident the difference between the two population proportions, p, - P2, is between and (Use ascending order. Type an integer or decimal rounded to three decimal places as needed.)

Assume that last year in a particular state there were 211 children out of 1990 who were diagnosed with Autism Spectrum Disorder. Nationally, 1 out of 88 children are diagnosed with ASD. It is believed that the incident of ASD is more common in that state than nationally.  Calculate a 96% confidence interval for the percentage of children in that state diagnosed with ASD.P: Parameter    What is the correct parameter symbol for this problem?                  What is the wording of the parameter in the context of this problem?             A: Assumptions Since     information was collected from each object, what conditions do we need to check?  Check all that apply.     n≥30n≥30 or normal population. N≥20nN≥20n n(pˆ)≥10n(p̂)≥10 σσ is known. σσ is unknown. n(1−pˆ)≥10n(1-p̂)≥10     Check those assumptions:    1. nˆpnp^=  which is           2. n(1−ˆp)n(1-p^)=  which is           3. NN=  which is                   If no N is given in the problem, use 1000000N: Name the procedure     The…

answer b

7. What is the 95% confidence interval for the difference in the population means, µ1 - µ2, given the data from the two independent samples: n1 =56, x1= 58.2, s1= 4.3, n2=45, x2=60.2, s2=5.5 B. [-3.28 , -0.72] C. [-3.60, -0.40] D. [-3.65 , -0.35] A. [-3.96 , -0.04] 8. What is the 98% confidence interval for the difference in the population means, µ1 - µ2, given: n1= 22, x1= 41.4, s1= 5.9, n2= 19, x2= 43.2, s2= 6.5  D. [-3.48 , -0.12] B. [-3.07 , -0.53] A. [-3.12, -0.48] C. [-3.18, -0.42]

Which alternative hypotheses will allow you to determine statistical significance at α = 0.05 using a 95% confidence interval?   H a: μ = 30 H a: μ > 30 H a: μ ≠ 30 H a: μ <30