An experiment was done to determine how environmental factors affect the swimmin

Question

An experiment was done to determine how environmental factors affect the swimming behavior of paramecium. The hypothesis was that the locomotion of paramecium will change when NaCl is added to the swimming solution.

The following results are

Question: 1. Do the results support the hypothesis? What do the results tell you about the behavior of the species?

2. If you were to take this experiment one step further, what would be the next experiment you would try? Note: The future experiment has to follow your results.

Speed (mm/s) with NaCl Trial 0.8 mm/s 1 0.8 mm/s 2 0.6 mm/s 3 1.2 mm/s 4

Explanation / Answer

Hypothesis: The hypothesis was that the locomotion of paramecium will change when NaCl is added to the swimming solution.

S.No.

Speed (mm/s) with NaCl

Speed (mm/s) without NaCl

1

0.8

0.8

2

0.8

0.8

3

0.6

1

4

1.2

0.8

Average

0.85

0.85

Standard Deviation

0.251661148

0.1

Variance

0.063333333

0.01

To study the difference between these two categories is significant or not T-test adopted here.

T- test (Two-Sample Assuming Unequal Variances) data analysis:

Variable 1

Variable 2

Mean

0.85

0.85

Variance

0.063333333

0.01

Observations

4

4

Hypothesized Mean Difference

0

df

4

t Stat

0

P(T<=t) two-tail

1

t Critical two-tail

2.776445105

P value and statistical significance: The two-tailed P value equals 1.00. By conventional criteria, this difference is considered to be not statistically significant. Hypothesis rejected.

S.No.

Speed (mm/s) with NaCl

Speed (mm/s) without NaCl

1

0.8

0.8

2

0.8

0.8

3

0.6

1

4

1.2

0.8

Average

0.85

0.85

Standard Deviation

0.251661148

0.1

Variance

0.063333333

0.01

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.