Testing a claim about a proportion: In a sample random poll of 514 human resource professionals, 236 said that body piercings and tattoos were big grooming red flags. Use a 0.01 significance level to test the claim that less than 50 % of all human resource professionals say that piercings are big grooming red flags. Show all of your 6 steps labeled in the box below. You must use the p-value method to get credit.

A survey asked students at a high-school football game whether a fund for extra-curricular activities should be used to buy new equipment for the football team or instruments for the school band. Classify the type of bias demonstrated in this scenario. Think about how the survey process could be changed to eliminate/reduce bias.

why are we using the number of events=19 for the sample proportion part of the equation, instead of the actual sample proportion=0.19?

We predict that children exhibit more aggressive act after watching a violent television show. The scores for ten children were recorded before they watched a violent show and then after they watched a violent show. Aggression was measured in terms of number of aggressive acts (e.g. hitting, yelling, kicking etc).   Sample 1 (after TV show): 5,6,4,4,7,3,2,1,4,1 Sample 2 (before TV show): 4,6,3,2,4,1,0,0,5,2   What is the critical value?

Find tests statitic and p-score.

Using 1% for the significance level, find the conclusion of this hypothesis testing in words using the p-value approach. Follow the questions below. 1) State the p-value and interpret the p-value in words.  2) Using the significance level and the p-value, state the conclusion of this hypothesis testing.

which statistical analysis correctly analyzes the repeated measures (also known as within subjects) design?

K A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 298 people over the age of 55, 69 dream in black and white, and among 310 people under the age of 25, 15 dream in black and white. Use a 0.01 significance level to test the claim that the proportion of people over 55 who dream in black and white is greater than the proportion for those under 25. Complete parts (a) through (c) below. this 2 W S x H nd a. Test the claim using a hypothesis test. Consider the first sample to be the sample of people over the age of 55 and the second sample to be the sample of people under the age of 25. What are the null and alternative hypotheses for the hypothesis test? OA. Ho: P₁2P2 H₁: P₁ P2 OD. Ho: P1 P2 H₁: P₁ = P2 Identify the test statistic. Z= View an example (Round to two decimal places as needed.) 35 E D с Get more help. NOV 20 R F V ▲ % S T G B stv OB. Ho: P1 SP2 H₁: P₁ P2 OE. Ho: P1 P2 H₁: P₁ P2 MacBook Air Y H SA JA N www J # 00 8…