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hram777
18 days ago
14

Eliana got a new puppy for her birthday. She went to the pet store to buy what

Mathematics
You might be interested in
The weights of soy patties sold by Veggie Burgers Delight are normally distributed. A random sample of 15 patties yields a mean
Svet_ta [12734]

Answer:

t=\frac{3.8-4}{\frac{0.5}{\sqrt{15}}}=-1.549

Step-by-step explanation:

Given data and notation

\bar X=3.8 indicates the sample mean

s=0.5 refers to the sample standard deviation

n=15 is the sample size

\mu_o =4 represents the value we are testing.

\alpha indicates the significance level for the hypothesis test.

t refers to the statistic of interest.

p_v is the p-value for the test (the variable we are interested in).

Formulate the null and alternative hypotheses.

I will set up the hypotheses to verify if the mean weight falls below 4 ounces, formalizing:

Null hypothesis: \mu \geq 68

Alternative hypothesis: \mu < 4

Since our sample size is < 30 and the population standard deviation is unknown, it’s advisable to utilize a t test to compare the actual mean against the reference value, with the statistic calculated as follows:

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}} (1)

t-test: "This test compares group means and is commonly utilized to determine if the mean is (greater than, less than, or not equal to) a specific value."

Calculate the statistic

We can substitute the provided information into formula (1):

t=\frac{3.8-4}{\frac{0.5}{\sqrt{15}}}=-1.549 

3 0
3 months ago
You buy a pair of jeans at a department store. A receipt, titled "Department Store". It shows the bill for a pair of jeans. Jean
tester [12383]
ఈ క్రింది విధంగా వివరణ: 25% 6.5% 35% కీ వివరణతో: ఇన్వాయిస్ ఇచ్చినప్పుడు: జీన్స్ కోసం బిల్ 39.99; డిస్కౌంట్ - 10.00; సబ్టోటల్ 29.99; నగదు పన్ను 1.95; మొత్తం 31.94. A) % డిస్కౌంట్ దగ్గరికి % క్రితం క్రింది అంచనా మార్క్; డిస్కౌంట్ మొత్తం = % డిస్కౌంట్ * ధర; 10 = x% * 39.99; 10/39.99 = x%; 0.2500625 = x%; x = 0.2500625 * 100%; % డిస్కౌంట్ = 25% % నగదు పన్ను; నగదు పన్ను మొత్తం = % పన్ను * సబ్టోటల్; 1.95 = x% * 29.99; 1.95/29.99 = x%; 0.06502 = x%; x = 0.06502 * 100%; x = 6.5%; డిస్కౌంట్ కంటే ముందు మార్కప్ = 60%; డిస్కౌంట్ తరువాత మార్కప్ = (60 - 25)% = 35%.
5 0
2 months ago
A gift box has dimensions of: 8 1 2 inches, 5 1 2 inches, and 2 1 2 inches, respectively. how many cubes with side lengths of 1
Inessa [12570]
Lengthwise count of 1/2-inch cubes = 8 1/2 ÷ 1/2 = 17
Widthwise count of 1/2-inch cubes = 5 1/2 ÷ 1/2 = 11
Heightwise count of 1/2-inch cubes = 2 1/2 ÷ 1/2 = 5

Total number of 1/2-inch cubes = 17 x 11 x 5 = 935

------------------------------------------------------------
Answer: 935 1/2-inch cubes are required.
------------------------------------------------------------

7 0
2 months ago
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