30 female cichlid fish were given a choice to associate with one of two males: one male had a collection of 10 shells in his territory, the other male had a collection of 25 shells in his territory Female choice was measured as the first male with which a female spent more than 3 minutes on his territory. Run a statistical Chi squared test to see if the data is statistically significant.
3min with 10- shell male: 8 females
3min with 25 -shell male: 22 females
30 female cichlid fish were given a choice to associate with one of two males: one...
Do female college students spend more time than male college students watching TV? This was one of the questions investigated by the authors of an article. Each student in a random sample of 46 male students at a university in England and each student in a random sample of 38 female students from the same university kept a diary of how he or she spent time over a three-week period. For the sample of males, the mean time spent watching...
when looking for a romantic partner. Two samples were collected: 30 adolescent males (age 13-15) and 30 male college students (age 19-32). Each subject was asked to identify the single most important factor determining whether he is likely to pursue a romantic relationship with a new female acquaintance. The number of men who chose each category are shown below. The 60 cases have been entered into a SPSS file called Ch17n21.sav. Run a Chi-square test for Independence using Analyze, Descriptive...
Can people tell the difference between a female nose and a male nose? Eight Caucasian males and eight Caucasian females posed for nose photos. The article states that none of the volunteers wore nose studs or had prominent nasal hair. Each person placed a black Lycra tube over his or her head in such a way that only the nose protruded through a hole in the material. Photos were then taken from three different angles: front view, three-quarter view, and...
A researcher randomly selected n = 30 drivers who were issued speeding tickets in a city. There are four variables in this data set: (1) ID number, (2) age, (3) sex, and (3) size of the car that s/he drove when s/he got the speeding ticket. *Sex (1 = Males, 2 = Females); Size_car (1 = Small, 2 = Medium, 3 = Large). Data ID AGE SEX SIZE_CAR 1 18 1 2 2 28 1 2 3 44 1 3...
Researchers collected volunteers for a study of women who had recently given birth, divided into 2 groups: a comparison group (healthy, uneventful pregn group with gestational diabetes (women who developed diabetes during pregnancy). All the women were between 25 and 40 years old. Also measured for each woman was: - Body Mass Index (BMI) pre-pregnancy (continuous numerical) - Smoker (Yes/No: categorical) - Baby's gestational age at birth in weeks (continuous numerical) - Baby's birth weight in grams (continuous numerical) Enter...
8. A random sample of 25 college males was obtained and each was
asked to report their actual height and what they wished as their
ideal height. A 95% confidence interval for μd= average difference
between their ideal and actual heights was 0.8" to 2.2". Based on
this interval, which one of the null hypotheses below (versus a
two-sided alternative)can be rejected?
A. H0: μd= 0.5
B. H0: μd= 1.0
C. H0: μd= 1.5
D. H0: μd= 2.0
9. The...
CASE 2.5 Cosmopolitan Magazine 373 CASE 2.5 cOSMOPOLITAN MAGAZINE Surveys are often sponsored and conducted by various popular press outlets to spur interest among and create a more inreractive relationship with their readers. Nowadays, surveys asking people abour their consumer preferences, shopping behavior, general opi nions, even their sexual habits, are commonplace, but this was not always so. A land mark survey of this kind, often characterized as such due to its ens sample of 106,000, was conducted in 1980,...
Chapter overview 1. Reasons for international trade Resources reasons Economic reasons Other reasons 2. Difference between international trade and domestic trade More complex context More difficult and risky Higher management skills required 3. Basic concept s relating to international trade Visible trade & invisible trade Favorable trade & unfavorable trade General trade system & special trade system Volume of international trade & quantum of international trade Commodity composition of international trade Geographical composition of international trade Degree / ratio of...
explaim the mechanisms amd toxological effects if type 1
diabetes in this article
Exposure to arsenic in drinking water is associated with increased prevalence of diabetes. We previously reported an association of diabetes and urinary concentration of dimethylarsinite (DMAS"), a toxic product of arsenic methylation by arsenic (+ 3 oxidation state) methyltransferase (AS3MT). Here we examine associations between AS3MT polymorphism, arsenic metabolism and diabetes. Fasting blood glucose, oral glucose tolerance and self-reported diagnoses were used to identify diabetic individuals. Inorganic...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated sludge operation that adversely affect effluent quality with origins in the engineering, hydraulic and microbiological components of the process. The real "heart" of the activated sludge system is the development and maintenance of a mixed microbial culture (activated sludge) that treats wastewater and which can be managed. One definition of a wastewater treatment plant operator is a "bug farmer", one who controls the aeration...