hypothesis

  1. Z

    Hypothesis test of proportion from a table

    I have a column with 50 data points regarding gender of the respondent (male or female). Is there a direct way to calculate if the number of males in the dataset is significantly more than number of females? I can calculate the number of males and females and then use prop.test. But is there...
  2. A

    Goodness-of-fits tests.

    I honestly have no idea where to even start in this assignments. Any type of ell would be greatly appreciated. I can easily do the problems given in different forms but word problems have never been my strongest. According to the following distribution (digit, probability): (1, 0.301) (2...
  3. A

    What hypothesis test?

    I have a population of Z items, where X must pass and Y must fail. The thing is that the X that pass is not just a count (i.e. if 2 must pass, it has to be items A and B. It can't be C and D.) How do I figure out the sample size/what test should I use to test this? Also, how would I test it...
  4. F

    Basic hypothesis question - variables

    Hello, I am new to statistics so please excuse my ignorance. My question relates to a hypothesis which I would like to test. I know that hypotheses need and independent and dependent variable. My question is: Can there be two independent variables in a hypothesis. Example...
  5. B

    Hypothesis Test Help!

    Here is what I have thus far. My teacher has a theory that 40% of students at the university are female. I needed to survey 30 random students and asked them if they think 40% of students are female. 22 said yes while 8 said no. I need to carry out a hypothesis test to claim his...
  6. C

    Computing sample size and Best Critical Region

    Let X_1,X_2,\ldots,X_n denote a random sample from a normal distribution N(\theta,100). Show that C=[(x_1,x_2,\ldots,x_n):c\leq \bar x=\frac{\sum_1^n x_i}{n}] is a best critical region for testing H_o:\theta=75 against H_1:\theta=78. Find n and c so that...
  7. S

    It should be s simple answer about Hypothesis Testing!

    Hi, I am trying to understand from seeing in sites, hear this site explains it good Please have a look hear. Somewhere it says: "The z-score that corresponds to .05 is -1.645" (you may press ctrl+F4 to find it quickly). How did he find that z of 0.05 is -1.654 in the table of z-scores I, I...
  8. D

    Help with Defining the null hypotheses for Manova

    Hi all, I'm trying to test the combination of 4 different treatments therefore I have 16 different groups with different combinations of the treatment. I have 4 DVs that represent a single construct. I would like to proove (or statisticlally show): 1 - what is the best treatment 2 -...
  9. T

    Urgent!! Need help to decide the right test for my research

    Hi, I am conducting research on coffee industry, my topic is to identify the most important factors that influence the customer retention. the factors that i am studying are "price, quality, product range & shop ambiance". My hypothesis that i want to test is "coffee Quality is positively...
  10. Maxime

    What test to perform on these hypothesis?

    Dear all, I am having trouble trying to find the right test for my research data, and I was wondering if somebody could help me out! These are the hypothesis: The development of any proprietary technology, processes or procedures by a new firm is likely to positively affect the number...
  11. L

    Hypothesis testing - which method to use?

    Hi everyone, I am taking a introductory Statistics course for my business program. I have been given a case to work with and I am completely confused about it. A little help would be great! I am not looking for exact answers per say, but just some guidance on which methods to use. Here is the...
  12. H

    question about null hypothesis??

    here is my question: in my minor thesis, based on my theoretical framework, i have a hypothesis that stated that: "the score of group A is the same as group B". so if that was my alternative hypothesis? what would be my null hypothesis? would my Ho be: "the score of group A is not the same as...