A star of apparent magnitude +2.1 appears _____ than a star of apparent magnitude –1.2.

In the spectral classification scheme, what designation is given to a star just a little cooler than a K5 star?

The spectrum of an ordinary main-sequence star is a

The Sun’s spectrum peaks in the green region (i.e., green is the most intense color in its spectrum). The spectrum of Rigel (the knee of Orion) peaks in the short-wavelength end of the visible spectrum. Compared with the Sun, Rigel is

A planetary nebula is a

An investigator studied the relationship between marital status and attitudes towards same-sex marriage. Thirty people that identified as heterosexual were interviewed for the study. 10 participants were single, 10 were married, and 10 were divorced. An attitude questionnaire was then administered to each participant in order to measure their attitude towards same-sex marriage. The scale ranged from 1 to 12 with higher scores representing a more positive attitude towards same-sex marriage. What is the critical value for this problem?

An investigator studied the relationship between marital status and attitudes towards same-sex marriage. Thirty people that identified as heterosexual were interviewed for the study. 10 participants were single, 10 were married, and 10 were divorced. An attitude questionnaire was then administered to each participant in order to measure their attitude towards same-sex marriage. The scale ranged from 1 to 12 with higher scores representing a more positive attitude towards same-sex marriage. Based on the partially filled in summary table below what is F? Source    SS       df        MS            F            Between   —        —         —             — Within      20       —         —                        Total        80           

If we obtain a value of 1.00 when calculating an F ratio, what does this mean?

An investigator studied the relationship between marital status and attitudes towards same-sex marriage. Thirty people that identified as heterosexual were interviewed for the study. 10 participants were single, 10 were married, and 10 were divorced. An attitude questionnaire was then administered to each participant in order to measure their attitude towards same-sex marriage. The scale ranged from 1 to 12 with higher scores representing a more positive attitude towards same-sex marriage. What is the independent variable in this study?

A psychologist would like to examine the relative effectiveness of three different therapy techniques for the treatment of mild phobias. A sample of 15 individuals who display moderate fear of spiders were recruited to participate in the study. These individuals were then randomly assigned (n = 5) to one of the three different therapies. After six weeks of therapy each participant’s fear of spiders was evaluated, scores ranged from 1 to 5 (1 = no fear, 2 = some fear, 3 = neutral, 4 = afraid, 5 = extremely afraid). Use the data below to determine if the three therapies differed in how effectively they treated the participant’s fear of spiders. **Report the observed value of F to 4 decimal places. Fear of Spiders Ratings for the Three Groups Therapy A Therapy B Therapy C 5 4 3 5 3 1 5 2 1 4 4 1 4 2 3