A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 295 people over the age of 55, 62 dream in black and white, and among 292 people under the age of 25, 13 dream in black and white. Use a 0.05 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.

Here are the reading scores (out of 60) of 20 randomly selected kindergarten kids in a district 34, 26, 46, 46, 43, 42, 45, 39, 43, 32, 15, 36, 29, 39, 41, 27, 38, 58, 31, 35 Find the 5-number summary for the data set. Min: 15 Q1: OF 58 Find the IQR of the data set. IQR: 11.7 x Find Q3+1.5(IQR).! Q3+1.5(IQR) = 60.6 X Median: 38.5 38.5 Q3: 43 043 Max: 58 Are there any high outliers, that is, are there any numbers in the data set higher than Q3+1.5(IQR)? No, there are no high outliers ✓ OB Find Q₁-1.5(IQR). Q₁-1.5(IQR) Are there any low outliers, that is, are there any numbers in the data set higher than Q₁— 1.5(IQR)? No, there are no low outliers ✓ = 25.3 X

A statistic is a number that... describes a characteristic of a population of scores. describes a characteristic of a sample of scores. is never used to estimate or make a decision about a parameter. summarizes all the individuals a researcher is interested in.

How many samples or treatments are here?   490 undergraduate students at a state university in the southwestern region of the United States were surveyed. Each student in the sample was classified according to class standing (freshman, sophomore, junior, or senior) and body are category (body piercings only, tattoos only, both tattoos and body piercings, no body art). Use the data in the accompanying table to determine if there is an association between class standing and body art category. Assume that it is reasonable to regard the sample as representative of the students at this university. Use α = 0.01.                                                             Freshman  Sophmore   Junior    Senior Body Piercings                                          61              7              14          86 Only Tattoos                                             43              11             10         64 Only Mildly Piercings and Tattoos            20                9              7…

Research Study:   The following data collected lists the typing speed as measured by a standard typing test for 5 college students, along with the number of pages they had to type for their project.Instructions:   Use the data collected to compute the values listed in Table#1.  Use .05 significance.   Research Data Collected: Student Number of pages typed Typing speed Chris 37 70 Mary  6 54 Paul 12 25 Juan 34 42 Marcelo 16 35   Table #1 1.      SP 2.      r2 3.      ∑x 4.      ∑y 5.      SSx 6.      SSy 7.      a 8.      b 9.      F ratio 10.   F critical (value from F table)

Section 9.1 Question #5 A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 302 people over the age of​ 55, 80 dream in black and​ white, and among 296 people under the age of​ 25, 15 dream in black and white. Use a 0.05 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.   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?   A. H0​: p1 = p2     H1​: p1 < p2 B. H0​: p1 = p2     H1​: p1 > p2 C. H0​: p1 ≤ p2     H1​: p1 ≠ p2 D. H0​: p1 ≠ p2     H1​: p1 = p2 E. H0​: p1 ≥ p2     H1​: p1 ≠ p2 F. H0​: p1 = p2     H1​: p1 ≠ p2   Identify the test statistic. z= ___________ ​(Round to…

The length of fish were measured at 3 different lakes.  Lake 1:  3.5, 4.2, 6.1, 5.2 Lake 2: 3.1, 3.2, 4.3, 2.1 Lake 3: 5.6, 7.1, 4.4, 4.1, 6.2 Is there evidence to suggest that the average length is not the same at all 3 locations? Group of answer choices There is not evidence to suggest the average length of fish is different at one of the lakes. There is evidence to suggest that the average length is different at one of the lakes.   Enter the test statistic (to 4 decimal places)

Help, please.

The table shows data about student involvement in extracurricular activities at a local high school. Extracurricular Activities Involved in Not Involved in Activities Activities Totals Male 112 145 257 Female 139 120 259 Totals 251 265 516 P(femalel involved in activities)? 265 516 139 251 251 516 139 516

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