Which of the following must be used as the significance level if we want a lower possibility of a correct decision? a. 1% b. 2% c. 5% d. 10%

Drop down options are as follows: a. z test or t test b. u or p, <,>,= or not equal to c. z or t

1. The lower quartile is equal to what? A. 50th percentile B. 25th percentile C. 2nd decile D. 3rd quartile 2. In the set of scores 14, 17, 10, 22, 19, 24, 8, 12, and 19, which of the following is the median score? A. 17 B. 15 C. 16 D. 13 3. percentile? Which of the following is equivalent to the 50th A. 5th decile B. 2nd quartile C. mean score D. all of the above For items 4 to 6, consider the score distribution of 15 students given below: 83 72 87 79 82 77 80 73 86 What is the median score? 81 79 82 79 74 74 4. A. 80 B. 82 C. 73 D. 79 5. Which of the following is the lower quartile? A. 72 B. 74 C. 79 D. 86 6. What is the value of the second decile? A. 72 B. 74 C. 83 D. 85 For items 7 to 10, consider the scores 70 Grade 10 students in Mathematics Test. Less than Cumulative Scores Lower Boundaries Frequency Frequency 95-99 3 94.5 70 90-94 6 89.5 67 85-89 2 84.5 61 80-84 7 79.5 59 75-79 9 74.5 52 70-74 11 69.5 43 65-69 12 64.5 32 6 60-64 59.5 20 55-59 5 54.5 14 3 50-54 49.5 9 4 44.5 6…

Don't use chat gpt. Suppose that 2% of the population has a peanut sensitivity. Suppose a test for peanut sensitivity is 90% accurate in confirming: 90% of those with the peanut sensitivity test positive and 90% of those who do not have the peanut sensitivity test negative. What percentage of those being TESTED have a FALSE-POSITIVE result? Pick the closest.   Group of answer choices   A.1.8%   B.9.8%   c.18%   D.84%   E.89%

For a categorical variable, the most appropriate control chart to monitor the proportion of a certain characteristic is a(n) Group of answer choices A. p bar chart B. x bar chart C. c chart D. s chart.

A second-grade teacher wants to compare scores on a reading assessment at the beginning of the year to scores on the same assessment at the end of the year. There are 28 in the class, and all students take both of the assessments. What is the degrees of freedom value for the paired-samples t test? a. 54 b. 55 c. 28 d. 27

You read that a study was conducted as a 3 x2 ANOVA. This study had how many independent variables?   Question 12 options:   1   2   5   6

The table below shows the grades of the 20 students of a martial arts class. There are three grades: satisfactory(S), unsatisfactory(U), and incomplete(I) Question: Which measure of central tendency is appropriate for the variable? Mode Median Mean

The Bureau of Labor Statistics reports that the official unemployment rate for Black people was 10.4% and 4.7% for White people in February 2015. Select all correct answers for this question. O The samples of white and black people are independent. The explanatory variable is the unemployment rate. The response variable is the unemployment rate. The response variable is race.

A politician wants to know what percentage of the voters support her position on the issue of political dynasty. What size voter sample should be obtained to determine with 90% confidence the support level to within 4%? O a. 423 O b. 25 O c. 1691 d. 600 e. 21