Standard deviations of 95,90,85,80,75,70,65,60,55

To clarify, are you asking for the **z-scores** (critical values) corresponding to specific confidence levels (such as 95%, 90%, etc.), or are you asking for the standard deviations of certain data sets? If you're referring to the z-scores used in hypothesis testing or constructing confidence intervals, I can provide the critical values.

For confidence levels, here are the approximate z-scores (or critical values) that correspond to common confidence intervals:

1. **95% confidence level**: z ≈ 1.96
2. **90% confidence level**: z ≈ 1.645
3. **85% confidence level**: z ≈ 1.44
4. **80% confidence level**: z ≈ 1.28
5. **75% confidence level**: z ≈ 1.15
6. **70% confidence level**: z ≈ 1.04
7. **65% confidence level**: z ≈ 0.93
8. **60% confidence level**: z ≈ 0.84
9. **55% confidence level**: z ≈ 0.76

These z-scores represent how many standard deviations away from the mean a certain percentage of data falls, assuming a normal distribution.

Would you like to explore any specific applications of these values or ask further questions about their use? Feel free to clarify or expand the question!

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Here are 5 related questions:

1. How are z-scores used to calculate confidence intervals?
2. What is the relationship between standard deviation and confidence intervals?
3. How do you calculate the sample size for a desired confidence level?
4. What is the formula for converting a z-score to a confidence interval?
5. What is the difference between z-scores and t-scores in hypothesis testing?

**Tip:** The critical z-value is key when constructing confidence intervals and determining the margin of error in statistics.

Standard deviations of 95, 90, 85, 80, 75, 70, 65, 60, 55

Explore the z-scores corresponding to confidence levels of 95%, 90%, 85%, 80%, 75%, 70%, 65%, 60%, and 55%. Understand how these values are used in hypothesis testing, confidence intervals, and their relationship with standard deviation in statistics. Suitable for high school and college students.

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