answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
notsponge [240]
2 years ago
6

To test the age old question if talking to plants helps them grow, horticulturists obtained 24 heirloom tomatoes. From each toma

to, two seeds are selected. One of the two seeds is randomly chosen to be in the "conversation" group, the other in the "control" group. Everything about how the tomato seeds were grown was exactly the same (same amount of water, same soil type, etc. ) except the seeds chosen to be in the "conversation" group were spoken to for 3 hours a day. After 6 weeks, the height of all resulting tomato plants was measured in inches. The mean difference in the height of the plants between the conversion and control groups is 7.26 inches with a standard deviation of 9.61 inches.
Based on the t-test statistic and p-value, researchers found moderate evidence against the null hypothesis. Give the final statement of the hypothesis test.

a. There is not enough evidence to conclude the mean difference in the height of the plants between the conversion and control groups is greater than 0.
b. There is enough evidence to conclude the mean difference in the height of the plants between the conversion and control groups is greater than 0.
c. There is enough evidence to conclude the mean difference in the height of the plants between the conversion and control groups is 0.
d. There is not enough evidence to conclude the mean difference in the height of the plants between the conversion and control groups is 0.
Mathematics
1 answer:
vlada-n [284]2 years ago
3 0

Answer:

Option D

Step-by-step explanation:

The null hypothesis: ∪ = 0; they do not grow after conversation

the alternative hypothesis : ∪ ≠ 0; they grow after conversation

Based on the question asked and the results given which is:

Based on the t-test statistic and p-value, researchers found moderate evidence against the null hypothesis. Give the final statement of the hypothesis test.

we can then draw a conclusion that:  There is not enough evidence to conclude the mean difference in the height of the plants between the conversion and control groups is 0

You might be interested in
Which best describes thepolynomial 7xy - 15y^3
otez555 [7]

Answer:

Step-by-step explanThis polynomial has three terms. The first one is 4x2, the second is 6x, and the third is 5. The exponent of the first term is 2. The exponent of the second term is 1

8 0
2 years ago
Which expression is equal to 6(−3m)4?
Anarel [89]

Answer:

-72m

Step-by-step explanation:

6(-3m)4

-18m(4)

-72m

7 0
2 years ago
If 24= 2f+3f+f, find f​
VashaNatasha [74]

Answer:

6f = 24

f = 4

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Using the standard normal table, the probability that Seth’s light bulb will last no more than 14,500 (P(z ≤ 1.25)) hours is abo
lana66690 [7]

Answer:

How many standard deviations above the mean is 14,500 hours? 1.25 1.5 2.5 Using the standard normal table, the probability that Seth's light bulb will last no more than 14,500 (P(z ≤ 1.25)) hours is about ✔ 89% .

5 0
1 year ago
Read 2 more answers
A piggy bank contains some dimes and nickels. There are 8 more dimes than nickels in the bank. There is a total of $1.40. How ma
Softa [21]

Answer:

4 nickels

12 dimes

Step-by-step explanation:

Dimes are worth .1 each while nickels are .05 each.

We have 8 more dimes than nickels. Let d represent number of dimes and n for number of nickels. This means we have d=8+n.

If all our nickels and dimes together are worth 1.4 then we have another equation .1d+.05n=1.4

Lets put our equations together:

d=8+n

.1d+.05n=1.4

‐-----------------Plug first equation into second.

.1(8+n)+.05n=1.4

Distribute

.8+.1n+.05n=1.4

Combine like terms

.8+.15n=1.4

Subtract .8 on both sides

.15n=.6

Divide both sides by .15

n=.6/.15=4

Remember there are 8 more dimes so d=8+4=12.

5 0
2 years ago
Other questions:
  • Find 10-3. Write the subtraction fact two ways.
    8·1 answer
  • Mrs. Hernandez bought 18 pens for her class. Highlighters cost $3 each, and gel pens cost$2.50 each. She spent a total of $50. W
    12·1 answer
  • A) The sum of −3x+5 and 7−4x is subtracted from 5x+17.
    15·1 answer
  • For a set of data, the average squared deviation from the mean, with a denominator of n-1 is called the:
    15·1 answer
  • A shopper paid $2.52 for 4.5 pounds of potatoes $7.75 for 2.5 pounds of broccoli and $2.45 for 2.5 pounds of pears. What is the
    9·1 answer
  • A car entered a roundabout from Mason Avenue, traveled 280 feet, then turned onto Perry Street. If the roundabout has a diameter
    6·1 answer
  • Using approximations to 1 significant figure check that your answer to part a makes sense
    12·1 answer
  • Notice that the alternative hypothesis is a two-tailed test. Suppose ttest_ind method from scipy module is used to perform the t
    14·1 answer
  • Grogg typed the following $1000$ expressions into his calculator, one by one: \[\sqrt{1}, \sqrt{2}, \sqrt{3}, \sqrt{4}, \dots, \
    6·1 answer
  • Doug has a bag full of crayons. There are 6 red crayons, 7 blue ones, and 4 green crayons. Doug wants to color a blue sky. What
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!