yeetmaster7688
19.12.2019 •
Mathematics
Nitrites are often added to meat products as preservatives. in a study of the effect of these chemicals on bacteria, the rate of uptake of a radio-labeled amino acid was measured for a number of cultures of bacteria, some growing in a medium to which nitrites had been added. here are the summary statistics from this study. group n x s nitrite 30 7880 1115 control 30 8112 1250.
carry out a test of the research hypothesis that nitrites decrease amino acid uptake at the 2% significance level.
Solved
Show answers
More tips
- C Cities and Countries What time does the Metro open in Moscow?...
- T Travel and tourism How to Use a Compass: A Beginner s Guide...
- C Computers and Internet Porn Banner: What It Is and How to Get Rid Of It?...
- F Food and Cooking How many stages of coffee roasting are there?...
- F Food and Cooking From Latte to Espresso: Which Coffee Drink is the Most Popular on Earth?...
- F Food and Cooking Experts Name Top 5 Healthiest Teas...
- C Computers and Internet Google Search Tips and Tricks: Everything You Need to Know...
- H Health and Medicine Discover the Hidden Principles and Real Results of the Japanese Diet...
- H Health and Medicine Liver Cleansing - Rejuvenation for the Body?...
- S Style and Beauty Is Photoepilation the Solution to Unwanted Hair Forever?...
Answers on questions: Mathematics
- M Mathematics There were 72 ice skaters at the ice skating rink. some of the ice skaters got cold and left. now there are 14 ice skaters at the ice skating rink. how many ice skaters left...
- M Mathematics suma a trei humere naturale este 366, impartiind al doilea numar la primul se obtine catul 2 si restul 7; impartind al treileaa numar la al doilea se oobtine catul 2 si restul...
- M Mathematics Please help me I need help...
- M Mathematics Dry rectangle that has an area of a square you need any permitter of 12 units what are the silence of the rectangle...
- S Spanish People walk the camino for reasons. a. religious c. athletic b. touristic d. all of the above select the best answer from the choices provided a b c d...
- M Mathematics Squaring a number is the same as multiplying the number by _____ raising the number to a power of ___ . For example, 4(4) = _...
- M Mathematics D. According to the graph, if only one unit was produced, the cost per unit would be $1.00. In reality, the company would not call in its worker and start up the equipment to...
Ответ:
H0:
H1:
So the p value is a very High value and using any significance level given we see that so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can't conclude that the mean for the nitrite group is significantly lower than the mean for th control group .
Step-by-step explanation:
1) Data given and notation
represent the mean for the sample Nitrite
represent the mean for the sample control
represent the sample standard deviation for the sample Nitrite
represent the sample standard deviation for the sample control
sample size for the group nitrite
sample size for the group control
t would represent the statistic (variable of interest)
represent the significance level
Confidence =1-0.02=0.98 or 98%
2) Concepts and formulas to use
We need to conduct a hypothesis in order to check if the nitrites decrease amino acid uptake , the system of hypothesis would be:
H0:
H1:
If we analyze the size for the samples both are equal to 30, but we don't know the population deviations, so for this case is better apply a t test to compare means, and the statistic is given by:
(1)
t-test: Is used to compare group means. Is one of the most common tests and is used to determine whether the means of two groups are equal to each other.
3) Calculate the statistic
We can replace in formula (1) like this:
4) Statistical decision
The first step is calculate the degrees of freedom, on this case:
Since is a left tailed test the p value would be:
So the p value is a very High value and using any significance level given we see that so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can't conclude that the mean for the nitrite group is significantly lower than the mean for th control group .
Ответ:
it is a horizontal line
Step-by-step explanation:
go to points (0,0) which is the middle of the two axis, then you go on the x axis first which is 5 so go to 5 then go 7 up that's your answer the draw a line from the two points