Create and interpret a 90% confidence interval for the parameter of interest.

Why do we use a t-distribution to compute confidence intervals for population means?

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…

A study is conducted by a physical therapist to determine whether there is a difference in the proportion of men and women in the U.S. that participate in regular sustained physical activity. It is found that 22% of menout of 550 and 19.5% of women out of 450 participated in regular sustained physical activity. Construct a 90% confidence interval for the difference in proportions of men and women that participate in regular sustained and state your conclusion.

A sample of 1200 females and 1000 males found that 78.3% of females and 35.1% males supported increased funding of arts.   Construct a 90% confidence interval around the difference in proportions.

A recent poll indicated that 42% of men supported raises taxes to fund additional park services.   The poll also found that 64% of women supported such a tax.  The sample consisted of 29 men and 25 women.   Construct a 90% confidence interval around the difference in proportions.

What is the formula for CONFIDENCE INTERVAL (CI) FOR μ1 – μ2 (TWO INDEPENDENT SAMPLES)?

If the confidence interval would only contain positive values, what would be your interpretation of this 95% confidence interval regarding this diet program?

The general form of a confidence interval is inferred as